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Journal articles on the topic 'Iran Alloy Steel Co'

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Published: 3 June 2025
Last updated: 31 July 2025

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1

Ahmad, Jafarnejad Chaghoshi and Meysam Amini*. "RELATIONSHIP BETWEEN KNOWLEDGE MANAGEMENT AND INNOVATION TYPES (CASE STUDY: IRAN ALLOY STEEL CO)." Indo American Journal of Pharmaceutical Sciences 04, no. 09 (2017): 3347–56. https://doi.org/10.5281/zenodo.999719.

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Today, human believes that knowledge is the integral part of everybody's life. Therefore, the organizations must try in business, knowledge and implementation of appropriate national and international the interests of the organization. One of the achievements is innovation. The close relationship between the two allows organizations to use knowledge to achieve innovation advantage. The present study examines the relationship between knowledge management dimensions with all kinds of innovation. Accordingly, a questionnaires were distributed to managers and experts of Iran Alloy Steel's supply c
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2

Li, Xiao Zhou. "Study on the Working Performance of 45# Mechanical Element with Ni-P-Co Alloy Coating." Applied Mechanics and Materials 37-38 (November 2010): 1360–63. http://dx.doi.org/10.4028/www.scientific.net/amm.37-38.1360.

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The working performance of Ni-P-Co alloy coating on the tooth surface of gears made from mechanical element of 45# steel was carried out. The experimental process on Ni-P-Co alloy coating was described. Several experimental results on the alloy coating such as surface shape, material element, metallographic structure, the adhesive strength between Ni-P-Co coating and 45# steel substrate, the shape characteristic of fatigue pitting and micro-hardness were analyzed. It is shown that the contact fatigue life and strength of steel gears with Ni-P-Co alloy coating is increased.
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3

Rozlin N.M Masdek, Nik, Zuraidah Salleh, Md Zin Abu, and . "The Characteristic of Cobalt-Nickel-Iron Alloy Coating Coated on Aluminium, Brass and Stainless Steel." International Journal of Engineering & Technology 7, no. 4.26 (2018): 97–101. http://dx.doi.org/10.14419/ijet.v7i4.26.22146.

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Electrodeposition is a well-known and economical method in the coating industry due to its low cost and fast process. This study investigates on the charateristic of electrodeposited Co-Ni-Fe alloy coating coated on three different substrates that is aluminium, brass and stainless steel. The surface morphology, microhardness, surface roughness, and corrosion resistance of Co-Ni-Fe electrodeposited on aluminium, brass and stainless steel was determined. This study compares the different properties of the Co-Ni-Fe alloy coating coated on aluminium, brass and stainless steel which can enhance the
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4

Zhang, Xiaodong, Xiaohua Jie, Liuyan Zhang, Song Luo, and Qiongbin Zheng. "Improving the high-temperature oxidation resistance of H13 steel by laser cladding with a WC/Co-Cr alloy coating." Anti-Corrosion Methods and Materials 63, no. 3 (2016): 171–76. http://dx.doi.org/10.1108/acmm-11-2015-1606.

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Purpose This paper aims to discuss that a WC/Co-Cr alloy coating was applied to the surface of H13 steel by laser cladding. Design/methodology/approach The oxidation behavior of the WC/Co-Cr alloy coating at 600°C was investigated by comparing it with the performance of the steel substrate to better understand the thermal stability of H13 steel. Findings The results showed that the WC/Co-Cr alloy coating exhibited better high-temperature oxidation resistance and thermal stability than did uncoated H13 steel. The coated H13 steel had a lower mass gain rate and higher microhardness than did the
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5

Ke, Ming, Ruyu Fan, Bingwen Qian, et al. "Research on dynamic behaviour of a co-sintered steel-tungsten alloy material." Journal of Physics: Conference Series 2888, no. 1 (2024): 012012. http://dx.doi.org/10.1088/1742-6596/2888/1/012012.

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Abstract The newly proposed co-sintering method was used to fabricate reliably connected steel-tungsten alloy layered material. To study the dynamic mechanical properties of steel and tungsten alloy made by co-sintering conditions and interaction between the two matrices of the co-sintered steel-tungsten alloy material, intensive experiments were conducted by the SHPB technique. Experimental results show that temperature rise from 298K to 1073K will cause an 80% loss in strength of the sintered steel, and 50% in tungsten alloy. Strain rates hardening is less prominent, with 18% increase in str
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6

Kaiwa, Kengo, Shinji Yaoita, Tomohiro Sasaki, and Takehiko Watanabe. "Effects of Ni and Co Additions to Filler Metals on Ag-Brazed Joints of Cemented Carbide and Martensitic Stainless Steel." Advanced Materials Research 922 (May 2014): 322–27. http://dx.doi.org/10.4028/www.scientific.net/amr.922.322.

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This study focuses on understanding the effect of Ni and Co additions to filler metals on Ag-brazed joints of cemented carbide and martensitic stainless steel. Ni and Co added braze alloys were processed based on Ag-Cu-Zn ternary alloy, and joint strength and microstructure of the brazed layer has been investigated. The joint strength increased by the 2.0mass%Ni and 0.5mass%Co addition into braze alloy. This trend is remarkable in the Co added alloy, and the brazed joint increased by 141% compared to that in no-added alloy. The joint strength was closely related to the suppression effect of Co
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7

Geng, Ruming, Shun Han, Xuedong Pang та ін. "Effects of Co on Mechanical Properties and Precipitates in a Novel Secondary−Hardening Steel with Duplex Strengthening of M2C and β−NiAl". Materials 17, № 13 (2024): 3261. http://dx.doi.org/10.3390/ma17133261.

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Synergistic strengthening of nano−scaled M2C and β−NiAl has become a new route to develop ultra−high secondary−hardening steel. At present, the effect of Co on the synergistic precipitation behavior of duplex phases of M2C and β−NiAl has been rarely reported. This paper revealed the effects of Co on the mechanical properties and duplex precipitates of M2C and β−NiAl in a novel 2.5 GPa ultra−high strength secondary−hardening steel. The tensile tests indicated that a 10% Co−alloy steel achieved a much stronger secondary−hardening effects compared to a Co−free steel during aging process, especial
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8

Narasimhamurthy, V., M. N. Srinivasa, and L. H. Shivashankarappa. "A Study on Physico-Chemical Properties of Zn-Co Alloy Deposits from an Acid Sulphate Bath Containing Triethanolamine and Thiaminehydrochloride." Journal of Advanced Electrochemistry 8, no. 1 (2022): 192–94. http://dx.doi.org/10.30799/jaec.063.22080101.

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The composition, properties, structure and morphology of electrodeposited Zn-Co alloy deposits obtained from an acid sulphate bath containing TEA and thiaminehydrochloride have been investigated. A bath solution containing 11% Co produced an alloy deposit with 0.6% Co indicating preferential deposition of zinc (anomalous process). The percentage of Co in the alloy increased with increase in current density and temperature. Cathodic current efficiency decreased with increase in current density and temperature. Static potentials of Zn-Co alloy were less negative to zinc and more negative to mild
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9

Sun, Wan Chang. "Oxidation Resistance of Ni-Co-ZrO2 Composite Coatings." Materials Science Forum 694 (July 2011): 799–803. http://dx.doi.org/10.4028/www.scientific.net/msf.694.799.

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Ni-Co alloy and ZrO2 particles were successfully codeposited on middle carbon steel substrate by electrodeposition. The oxidation resistance was evaluated by weight gains during high temperature oxidation test. The results indicate that, when the oxidation temperature is 573 K or 873 K, middle carbon steel, Ni-Co coating and Ni-Co-ZrO2 composite coating show lower weight gain. While the temperature is up to 1173 K, Ni-Co-ZrO2 composite coating possesses better oxidation resistance than Ni-Co coating and 45 steel. The reason may be that, the dispersive ZrO2 particles in the Ni-Co matrix reduce
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10

Herzallah, Ouahiba, Hachemi Ben Temam, Asma Ababsa, and Abderrahmane Gana. "Electrodeposited Ni-Co Films from Electrolytes with Different Co Contents." Defect and Diffusion Forum 406 (January 2021): 219–28. http://dx.doi.org/10.4028/www.scientific.net/ddf.406.219.

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Ni–Co alloy coatings were electrodeposited at various cobalt amounts on pretreated steel substrates. The co-deposition phenomenon of Ni-Co alloys was described as anomalous behaviour. Different techniques including scanning electron microscopy (SEM), energy dispersive spectroscopy (EDX), X-ray diffraction (XRD) and potentiodynamic polarization were used to characterize the alloy coatings. EDX results showed that the Co content increase with the enhancing of Co amount. SEM images have shown that the increase of Co amount leads grain developing from large grain to branched grain form and that go
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11

Herzallah, Ouahiba, Hachemi Ben Temam, Asma Ababsa, and Abderrahmane Gana. "Electrodeposited Ni-Co Films from Electrolytes with Different Co Contents." Defect and Diffusion Forum 406 (January 2021): 219–28. http://dx.doi.org/10.4028/www.scientific.net/ddf.406.219.

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Ni–Co alloy coatings were electrodeposited at various cobalt amounts on pretreated steel substrates. The co-deposition phenomenon of Ni-Co alloys was described as anomalous behaviour. Different techniques including scanning electron microscopy (SEM), energy dispersive spectroscopy (EDX), X-ray diffraction (XRD) and potentiodynamic polarization were used to characterize the alloy coatings. EDX results showed that the Co content increase with the enhancing of Co amount. SEM images have shown that the increase of Co amount leads grain developing from large grain to branched grain form and that go
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12

Xing, Hongxuan, Jidong Li, Xianwei Hu, Yaowu Wang, Yiyong Wang, and Zhipeng Liang. "Repair of soft magnetic properties of wasted silicon steel and Co7Fe3 alloy deposition mechanism." RSC Advances 13, no. 47 (2023): 33525–32. http://dx.doi.org/10.1039/d3ra06282a.

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13

Nechaikina, T. A., S. A. Nikulin, S. O. Rogachev, V. Yu Turilina, and A. P. Baranova. "FRACTURE RESISTANCE OF “TRANSITION” AREA IN THREE-LAYER STEEL/VANADIUM ALLOY/STEEL COMPOSITE AFTER THERMOMECHANICAL TREATMENT." Izvestiya Visshikh Uchebnykh Zavedenii. Chernaya Metallurgiya = Izvestiya. Ferrous Metallurgy 61, no. 6 (2018): 447–53. http://dx.doi.org/10.17073/0368-0797-2018-6-447-453.

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The creation of new structural materials for cladding tubes of fast neutron reactors is an urgent task of modern nuclear power engineering. A three-layer radiation-resistant and corrosion-resistant material based on vanadium alloy and stainless steel, intended for work under extreme conditions (high temperatures, radiation and aggressive environment) of operation of fast neutron reactor cladding tubes has been developed in recent years. The most important aspect determining the operability of this material during operation is the quality of the joining of different materials layers among thems
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14

Nadizadeh, Ali, Ali Sabzevari Zadeh, and Rashed Sahraeian. "Determination of the Knowledge Management Strategy (A Case: Iran Alloy Steel Company)." International Journal of Engineering and Technology 3, no. 6 (2011): 689–95. http://dx.doi.org/10.7763/ijet.2011.v3.306.

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15

Li, Zhong Hou, Sha Sha Liu, and Zhi Yong Cheng. "Study of High Co Superhard High Speed Steel Surface." Materials Science Forum 610-613 (January 2009): 253–56. http://dx.doi.org/10.4028/www.scientific.net/msf.610-613.253.

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Cobalt- superhard high speed steel layer has been formed on the surface of low alloy steel 20Cr2V by tungsten-molybdenum-cobalt plasma surface alloying and following plasma carbonizing. After plasma surface alloying, a homogeneous and dense surface alloying layer was formed, thickness of which is 200μm. Composition, microstructure and properties of the alloying layer were investigated. Contents of W, Mo, Co, Cr, V and C in the surface layer reach 8%,5%, 6% ,4%,1.5% and 1.5% or so respectively. The concentrations of alloy elements basically meet the requirements of high cobalt type superhard hi
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16

Zhou, Meijie, Liqun Ai, Lukuo Hong, Caijiao Sun, Yuqing Zhou, and Fanjun Meng. "Decarburisation of Fe-C alloy strips by gas–solid reaction in Ar-CO-CO2." Metallurgical Research & Technology 119, no. 1 (2022): 108. http://dx.doi.org/10.1051/metal/2021092.

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The gas–solid reaction decarburisation of cast iron strips is a direct steel production method with low production costs. In this study, the decarburisation kinetics of Fe-C alloy strips in an Ar-CO-CO2 atmosphere were investigated. Fe-C alloy strips with 4.2 wt.% C and different thicknesses (1, 1.5, and 2 mm) were used for the decarburisation experiments under temperatures of 1293, 1353, and 1413 K. The results indicate that, under appropriate mixed gas conditions, rapid decarburisation can be achieved. With an increase in the decarburisation temperature, the decarburisation rate increases si
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17

Alanazi, Nayef M., and A. M. El-Sherik. "Hardness and Wear Behavior of Electrodeposited Nanocrystalline Cobalt-Phosphorus Coatings." Materials Performance 54, no. 6 (2015): 32–35. https://doi.org/10.5006/mp2015_54_6-32.

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The hardness and wear properties of electroplated nanocrystalline cobalt-phosphorus coatings were studied and compared with those of commonly used wear-resistant cobalt-chromium alloy pipe. The results indicated that the wear resistance of an electroplated nanocrystalline Co-3 wt% P coating is similar to that of the alloy, but the Co-3 wt% P coating exhibited lower hardness. Electroplated nanocrystalline Co-3 wt% P coatings on carbon steel could be an economical alternative to a Co-Cr alloy in applications that require wear or erosion resistance.
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18

Zhang, Song, Chen Liang Wu, Jie Liu, Chun Hua Zhang, and Jun Zhe Tan. "Laser Cladding of Co-Based Alloy on 316 Stainless Steel." Advanced Materials Research 941-944 (June 2014): 2198–201. http://dx.doi.org/10.4028/www.scientific.net/amr.941-944.2198.

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316 stainless steel was surface cladded with Co-based alloy using a high power semiconductor laser system. Microstructure, chemical composition, constituent phases and microhardness of the clad coating were investigated with SEM, EDS, XRD and Vickers hardness tester, respectively. The experimental results show that the microstructure of the layer is dense, no voids, cracks or other defects appearing and metallurgical bond between coating and substrate is perfect, The clad layer was mainly consisted of a fine dendritic structure, the constituent phases of the clad layer are mainly composed of γ
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19

Liu, Wensheng, Lei Zhang, Yunzhu Ma, et al. "Low temperature co–sintering of tungsten alloy/steel composite structure." International Journal of Refractory Metals and Hard Materials 90 (August 2020): 105224. http://dx.doi.org/10.1016/j.ijrmhm.2020.105224.

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20

Sim, Ho Sup, K. S. Lee, Kon Bae Lee, Hyung Ryul Yang, and Hoon Kwon. "Influences of Severe Deformation and Alloy Modification on Secondary Hardening and Fracture Behavior." Materials Science Forum 475-479 (January 2005): 183–86. http://dx.doi.org/10.4028/www.scientific.net/msf.475-479.183.

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Secondary hardening and fracture behavior in the high Co-Ni steels containing W, has been studied in terms of severe deformation, Cr addition, and austenite condition. Two kinds of Co- Ni steels, containing the only W(W steel), and the W and Cr(WCr steel), were severely rolled and followed by direct quenching(DQ). In comparison with undeformed specimens, reaustenitizing( RA) was performed. DQ specimens exhibited higher impact toughness as well as higher hardness, as compared to RA specimens. The aging kinetics of the WCr steel was accelerated due to the Cr addition. While the W steel showed th
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21

Bajat, Jelena, Miodrag Maksimovic, Milorad Tomic, and Miomir Pavlovic. "The study of Zn–Co alloy coatings electrochemically deposited by pulse current." Chemical Industry 66, no. 5 (2012): 749–57. http://dx.doi.org/10.2298/hemind111215035b.

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The electrochemical deposition by pulse current of Zn-Co alloy coatings on steel was examined, with the aim to find out whether pulse plating could produce alloys that could offer a better corrosion protection. The influence of on-time and the average current density on the cathodic current efficiency, coating morphology, surface roughness and corrosion stability in 3% NaCl was examined. At the same Ton/Toff ratio the current efficiency was insignificantly smaller for deposition at higher average current density. It was shown that, depending on the on-time, pulse plating could produce more hom
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22

Fujikawa, Hisao, Takao Murakumo, Simon Newcomb, and Hiroshi Harada. "Steam Oxidation Behaviour of Ni-Based Single Crystalline Superalloy for the Advanced Gas Turbine." Defect and Diffusion Forum 263 (March 2007): 111–16. http://dx.doi.org/10.4028/www.scientific.net/ddf.263.111.

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Steam oxidation behavior of a new Ni-based single crystalline superalloy (TMS-75) developed as the high strength material for the advanced gas turbine which would be cooled by steam was studied in comparison with Inconel 625 alloy which is a representative Ni based superalloy and 12Cr ferritic steel which is conventionally used in boiler tubes and main steam pipes and steam turbines. TMS-75 alloy showed worse oxidation resistance in steam than Inconel 625 alloy, but it had much better oxidation resistance in steam than 12Cr steel. Also, the oxide scale of Inconel 625 alloy is very thin and is
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23

Zhao, X. R., Dun Wen Zuo, H. Cheng, Q. T. Li, S. Dai, and S. S. Feng. "Microstructure and Properties of Laser Cladding Co-Based Alloy Layer." Advanced Materials Research 764 (September 2013): 47–53. http://dx.doi.org/10.4028/www.scientific.net/amr.764.47.

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The Co-base alloy laser cladding layer was coated on the 2738 mold steel surface by using the TJ-HL-5000 transverse-flow CO2 continuous laser. The morphology and hardness were investigated by metallography microscope, scanning electron microscopy (SEM), X-ray diffraction (XRD) and microhardness tester. The metallography microscope and SEM investigations show that from interface to surface along the cross section direction, the cladding layers consist of plane crystal layer, columnar crystal layer, dendrites layer and surface cellular crystal layer, respectively. XRD results indicate that the c
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24

Cheng, Hu, Zhi Gang Fang, Sheng Dai, Xian Rui Zhao, and Jian Yi. "Microstructure and Properties of Laser Cladding Co-Based Alloy Coatings." Advanced Materials Research 295-297 (July 2011): 1665–68. http://dx.doi.org/10.4028/www.scientific.net/amr.295-297.1665.

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The Co-based alloy coatings were successfully fabricated on H13 steel by Nd:YAG and CO2laser. The microstructure and properties of the laser cladded coatings were compared and analyzed by SEM, EDS, XRD and microhardness tester. The results show that the excellent metallurgical bonding has formed at the interface between substrate and laser cladded coatings. Cellular crystal at the bonding zone, cellular dendrite at the central zone and reticular equiaxed crystal near top surface were observed in Nd:YAG laser cladded coating, while the typically hypoeutectic character was found in CO2laser clad
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25

Wang, Zhenhua, Boxiang Wang, Zengbin Yin, and Kui Liu. "Tribological behavior of spark plasma sintered ultrafine-grained WC-cobalt cemented carbides in dry sliding." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 234, no. 13 (2020): 2707–15. http://dx.doi.org/10.1177/0954406220909849.

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Ultrafine-grained tungsten carbide-cobalt (WC-Co) cemented carbides with different Co content were fabricated by spark plasma sintering. Then, tribological behavior of the ultrafine-grained WC-Co cemented carbides were studied by performing sliding wear tests with grinding balls made of GCr15 bearing steel (HRC 62∼66) and Ti-6Al-4V titanium alloy (HRC 36). When the grinding ball is composed of GCr15 steel, the time required to reach the stable friction stage decreases with the increase in cobalt content, whereas the friction coefficient and wear rate tend to increase, and the wear type is abra
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26

Zhao, Qian, Yong Kang Zhang, Cheng Yun Cui, Xi Gui Cui, and Jin Zhong Lu. "Microstructure of Laser Cladded Cobalt-Based Alloy Coating on T10 Tool Steel." Key Engineering Materials 464 (January 2011): 694–97. http://dx.doi.org/10.4028/www.scientific.net/kem.464.694.

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Co-based alloy coating was fabricated by powder feeding laser cladding on T10 tool steel. The microstructure and phase composition were investigated by scanning electron microscope (SEM) and X-ray diffractometer (XRD). The results showed that the different solidification microstructures on the section, such as planar, cellular and dendrite formed from the interface to the surface. The main phase γ-Co and another phase Cr23C6 existed in the original coating, however, the main phase γ-Co was unchanged, and another phase was replaced by Cr7C3 accompanying with Co3C and Co4B precipitations after a
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27

Tsuchiya, Hiroaki. "Formation of Self-Organized Pore Arrays on Metallic Substrates by Anodization and their Applications." Materials Science Forum 783-786 (May 2014): 2034–39. http://dx.doi.org/10.4028/www.scientific.net/msf.783-786.2034.

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The present work examines pore formation on type 316 stainless steel, Inconel 600 alloy and Co-Cr alloy. Ordered pore arrays are formed on the metallic substrates by electrochemical treatments in organic solvents containing perchlorate ions under optimized conditions. It is revealed that the key to form pore arrays is to control electrolyte composition. The formation of ordered pore arrays on stainless steel can be useful as the surface modification of the metallic biomaterial as the presence of pore arrays on stainless steel can enhance biocompatibility.
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28

KASPRZYCKA, Ewa, and Bogdan BOGDAŃSKI. "PROPERTIES OF DUPLEX LAYERS PRODUCED IN A VACUUM CHROMIZING PROCESS ON STEEL COVERED WITH COBALT ALLOY." Tribologia 269, no. 5 (2016): 63–72. http://dx.doi.org/10.5604/01.3001.0010.6595.

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The paper presents the results of examinations of the structure and properties of duplex layers of the CrC+(Co-W) type, produced in a vacuum chromizing process on a tool steel surface covered with Co-W electrolytic alloy. A comparison of the CrC+(Co-W) type duplex layers with the CrC type single carbide layers, produced in vacuum chromizing process, were performed. Studies of layers thickness, their hardness, structure, and concentration depth profiles of elements in the diffusion zone of these layers were carried out. Tribological properties of the layers and corrosion resistance were determi
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29

Li, Ming-xi, Yi-zhu He, and Guo-xiong Sun. "Laser cladding Co-based alloy/SiCp composite coatings on IF steel." Materials & Design 25, no. 4 (2004): 355–58. http://dx.doi.org/10.1016/j.matdes.2003.08.006.

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30

Pascal, Céline, Aurélie Thomazic, Annie Antoni-Zdziobek, and Jean-Marc Chaix. "Co-sintering and microstructural characterization of steel/cobalt base alloy bimaterials." Journal of Materials Science 47, no. 4 (2011): 1875–86. http://dx.doi.org/10.1007/s10853-011-5976-8.

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Liang, Ze Fen, and Min Zheng. "Influence of MoSi2 Addition in Co Based Alloy Cladding Coating on Microstructure Evolution and Pitting Corrosion Behaviour." Applied Mechanics and Materials 456 (October 2013): 392–98. http://dx.doi.org/10.4028/www.scientific.net/amm.456.392.

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In the present paper the influence of the addition of MoSi2particles on the microstructure and pitting corrosion behaviour of laser cladding Co based alloy coatings deposited on 304 stainless steel substrate has been reported. The coating microstructure was investigated by SEM, OM, XRD and EPMA etc.. And the pitting corrosion resistance of coating was evaluated in the 3.5% NaCl solution. The results showed that: (1) The microstructure is fined by increasing MoSi2percentage. And the coating microstructure evolved from dendrites and interdendritic eutectics to various faceted dendrites with the
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32

Ke, Ming, Ruyu Fan, Bingwen Qian, Kang Li, Xian Li, and Gang Zhou. "Co-sintered Steel-TA Complex Shells under Impact Loading." Journal of Physics: Conference Series 2535, no. 1 (2023): 012018. http://dx.doi.org/10.1088/1742-6596/2535/1/012018.

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Abstract To assess the application of the co-sintering method in fabricating steel-tungsten alloy (TA) complex shells, three types of structures were designed and accelerated by a light-gas gun to penetrate concrete targets. Experiment results show that, at around 500 m/s, the co-sintered steel-TA shells can survive the loadings penetrating the concrete targets without obvious deformation, confirming the viability of co-sintering in making steel-TA complex shells for moderate impact velocity. The fact that only a few scratches are left on the head of the penetrator implies the potential for hi
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33

Shang, Feng, Bin Qiao, and Yi Qiang He. "Development of Soft Magnetic Materials Prepared by Metal Injection Molding." Advanced Materials Research 662 (February 2013): 524–27. http://dx.doi.org/10.4028/www.scientific.net/amr.662.524.

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Several kinds of soft magnetic materials prepared by metal injection molding (MIM), including pure iron, soft magnetic stainless steel, Fe-Si alloy, Fe-Co alloy, Fe-Ni alloy are introduced. The advantages of soft magnetic materials prepared by MIM are exhibited, the research status and development of soft magnetic materials prepared by MIM are reviewed.
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34

Li, Hong Wei, Guo Ping Li, Wen Chen, et al. "Effect of WC and Co on the Microstructure and Properties of TiC Steel-Bonded Carbide." Materials Science Forum 898 (June 2017): 1468–77. http://dx.doi.org/10.4028/www.scientific.net/msf.898.1468.

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TiC base high manganese steel-bonded carbide was manufactured with conventional powder metallurgy method to service in wear and impact resistant condition. WC was added in the alloy in the form of (W,Ti)C carbides to improve the impact toughness and expand the applications of alloy, meanwhile, cobalt powder was also used to enhance the wettability of the metallic binder on the ceramic phase. Results showed that the impact toughness of the alloy was increased remarkably with the increase of WC content. The impact toughness reached 10.6 J/cm2 when WC content was 10.5 wt.%, while the hardness of
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35

Mohd Zainon, Nurazilah, Noorsyakirah Abdulah, Norazlan Roslani, et al. "Tribology Properties of Injection Moulded Co Based Alloy." Advanced Materials Research 1133 (January 2016): 285–89. http://dx.doi.org/10.4028/www.scientific.net/amr.1133.285.

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CoCrMo alloy is one of the most used metallic biomaterials due to its high wear. Premature wear of the component is one of the main cause of hip prosthesis failure. The objective in this study is to investigate the tribology properties of sintered CoCrMo fabricated via injection moulding. Tests were carried out at room temperature comparing metal injection moulded dog bone tensile samples at different sintering temperatures. The parameter used for the pin on disk test is a 10kN load, 500m sliding distance and a chromium steel ball as a sliding partner. The morphologies and compositions of the
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36

Niu, Xuelian, Zhongqi Luan, Yan Mei, and You Yu. "The corrosion resistance of Al-Fe-Co-Cr-Ni-Cu high entropy alloy coatings." Journal of Physics: Conference Series 2535, no. 1 (2023): 012023. http://dx.doi.org/10.1088/1742-6596/2535/1/012023.

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Abstract A high entropy alloy AlxFeCoCrNiCu (x=0.5, 1) coating was prepared by the electron beam evaporation method on the surface of the steel. The influence of aluminum content on the corrosion resistance of the coating is discussed. The obtained results show that the HEA coatings retain the HEA phase structure without any phase change. The polarization curves show that the high entropy alloy coating of Al0.5FeCoCrNiCu had better corrosion resistance in 0.5 mol/L H2SO4 solution and 1 mol/L NaCl solution. This design of the HEA coatings provides a novel method for steel corrosion-resistant ma
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37

Wang, Chen, Li Min Dong, Qing Feng Zan, Pen Guo, and Jie Mo Tian. "Wear Resistance of Nano-ZrO2 Ceramic for Hip Joint Head Prostheses." Advanced Materials Research 105-106 (April 2010): 175–78. http://dx.doi.org/10.4028/www.scientific.net/amr.105-106.175.

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By using the ring-block friction and wear machine, the friction and wear behavior of nano-ZrO2 ceramic test block against GCr15 steel test ring has been studied. At the same time, friction and wear test of 45# steel block against GCr15 steel ring has also been conducted for comparison. By using self-made test machine for the wear ability of the hip joint, the friction test of nano-ZrO2 ceramic hip joint head against ultra-high molecular weight polyethylene (UHMWPE) acetabulum has been done, the friction test of Co-Cr-Mo alloy hip joint head against UHMWPE acetabulum has also been made for comp
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38

Kim, Ick Soo, S. M. Lee, Joo Yong Kim, et al. "Co Addition Effect on the Precipitation Behavior of Laves Phase in Fe-10Cr Ferritic Alloy." Materials Science Forum 561-565 (October 2007): 1745–48. http://dx.doi.org/10.4028/www.scientific.net/msf.561-565.1745.

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Ferritic heat-resistant steel comprises basic alloys of Fe-10mass%Cr-W. This study investigates how stress, the addition of Co, and tempering before aging affect the precipitation of the Laves phase of Fe-10Cr-6W ferritic heat-resistant steel, which is used in ultra-supercritical power plants and nuclear reactor materials. The study also investigates the mechanical properties of the steel. Precipitation of the Laves phase by aging increases the tensile strength, but decreases the elongation and impact strength of the alloys. Toughness of the alloys decreases greatly as very fine disk-like Lave
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39

Nagrabia, Agnieszka, Maciej Sowa, Wojciech Simka, and Artur Maciej. "Galvanic Formation of Zn-Ni/Zn-Co Type Multilayer Alloy Coatings on Steel Substrate." Solid State Phenomena 227 (January 2015): 147–50. http://dx.doi.org/10.4028/www.scientific.net/ssp.227.147.

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Zn-Ni and Zn-Co monolayer and Zn-Ni/Zn-Co multilayer (from 2 to 128 layers) alloy coatings were formed on steel substrate by electrodeposition from acidic Zn-Ni bath and neutral Zn-Co bath. Samples were tested in salt chamber for corrosion resistance in neutral salt spray. Open circuit potential measurement and gravimetric study of corrosion were carried for samples immersed in the 5% NaCl solution.It was found that coatings of Zn-Ni surface layer occurred higher corrosion resistance then the coatings of Zn-Co surface layer. Sixteen-layer coating with Zn-Ni surface layer proved to be most effe
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40

Băilă, Diana-Irinel, Răzvan Păcurar, Tom Savu, et al. "Mechanical and Wetting Properties of Ta2O5 and ZnO Coatings on Alloy Substrate of Cardiovascular Stents Manufactured by Casting and DMLS." Materials 15, no. 16 (2022): 5580. http://dx.doi.org/10.3390/ma15165580.

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In the last years, additive manufacturing technologies have been developed, especially direct metal laser sintering, and used in the dental and medical implant domains. Cardiovascular stents have evolved from bioinert, bare metal cages to biomimetic devices that promote tissue regeneration or healing. In this paper, comparisons concerning mechanical properties between Co–Cr alloy and cast 304L stainless steel were realized using FEM analysis, necessary for manufacturing cardiovascular stents by DMLS technology using Co–Cr alloy. The purpose of this paper consists of the evaluation of the conta
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41

Idris, Jamaliah, Chukwuekezie Christian, and Eyu Gaius. "Nanocrystalline Ni-Co Alloy Synthesis by High Speed Electrodeposition." Journal of Nanomaterials 2013 (2013): 1–8. http://dx.doi.org/10.1155/2013/841260.

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Electrodeposition of nanocrystals is economically and technologically viable production path for the synthesis of pure metals and alloys both in coatings and bulk form. The study presents nanocrystalline Ni-Co alloy synthesis by high speed electrodeposition. Nanocrystalline Ni-Co alloys coatings were prepared by direct current (DC) and deposited directly on steel and aluminum substrates without any pretreatment, using high speed electrodeposition method. The influence of the electrolysis parameters, such as cathodic current density and temperature at constant pH, on electrodeposition and micro
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42

Abdel-Karim, R., M. Ramadan, and S. M. El-Raghy. "Morphology and Electrochemical Characterization of Electrodeposited Nanocrystalline Ni-Co Electrodes for Methanol Fuel Cells." Journal of Nanomaterials 2018 (August 7, 2018): 1–13. http://dx.doi.org/10.1155/2018/9870732.

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An electrocatalytic electrode surface was developed for alcoholic fuel cell by electrodeposition of Ni-Co alloy on a 301 stainless steel substrate. Material characterization by EDX and XRD confirmed deposition of Ni-Co alloy on stainless steel surfaces with a cobalt content of 15–35%. SEM showed nodular and/or angular particles with some subparticles embedded within the coarse nodules. Increasing the deposition current density as well as deposition time leads to deposition of Ni-Co alloys characterized by coarse angular morphology with lower cobalt content. The electrocatalytic activity of the
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43

Hashimoto, Kohei, Yukio Nakamura, Nobunori Takahashi, and Takkan Morishima. "Comparison of Different Materials in the Same-Sized Cemented Stems on Periprosthetic Fractures in Bone Models." Journal of Clinical Medicine 14, no. 8 (2025): 2724. https://doi.org/10.3390/jcm14082724.

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Objective: The increasing number of aging patients with total hip arthroplasties (THA) causes an increased incidence of periprosthetic fractures (PPF). The study aimed to evaluate the impacts of two different materials in the same-sized cemented stems on PPF in bone models. Methods: This study compared the maximum rotational torque leading to PPF when stems made of cobalt–chromium–molybdenum (Co–Cr–Mo) alloy and stainless use steel (SUS) were implanted using simulated bone models (Sawbones, 3403). The maximum destruction torque was compared statistically for each material (Co–Cr–Mo alloy vs. S
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44

Liu, Mu Tong, Ping Zhong, Wei Sheng, and Zhen Ye Zhao. "Optimized Design of Ultra-High Strength Stainless Steel Based on Thermo-Calc Calculation." Materials Science Forum 993 (May 2020): 585–91. http://dx.doi.org/10.4028/www.scientific.net/msf.993.585.

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The thermodynamic calculation software Thermo-Calc was used to study the influences of alloy elements Cr, Co, and Mo on the precipitated phases of a S280 ultrahigh strength stainless steel at the temperatures ranging from 400 °C to 1200 °C. The results showed that the precipitated phases in the steel were mainly composed of M23C6 carbide, M6C carbide, intermetallic compound of Laves phase and σ phase. The temperature and the content change of alloying elements Cr, Co and Mo have little effect on the precipitation of M23C6 carbide, while have great effect on the precipitation of Laves phase and
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45

Chiu, Liu Ho, Hsin Fu Wang, Chia Pao Huang, Ching Tsung Hsu, and Tsung Chi Chen. "Effect of Brazing Temperature on the Microstructure and Property of Vacuum Brazed WC-Co and Carbon Steel Joint." Advanced Materials Research 47-50 (June 2008): 682–85. http://dx.doi.org/10.4028/www.scientific.net/amr.47-50.682.

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The effect of brazing temperature on the properties of brazed joints between WC-Co hard alloy and SAE1045 carbon steel using Cu and ASTM C52100 bronze metal as insert fillers were investigated. A vacuum brazing furnace was employed to conduct the experiment with different sets of operational parameters (brazing temperature, bonding time and filler) were used. The experimental result shows that Fe-Co-Cu alloy layer was formed at the WC-Co/Cu filler interface. With increased brazing temperature and bonding time, the thickness of the Fe-Co-Cu layer increases. From the shear test, the maximum shea
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46

Wang, Hsin Fu, Liu Ho Chiu, and Heng Chang. "Effect of Tin Content on the Microstructure and Property of Brazed WC-Co/CrMo Alloy Steel Joints." Advanced Materials Research 47-50 (June 2008): 596–99. http://dx.doi.org/10.4028/www.scientific.net/amr.47-50.596.

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Vacuum brazing of Cemented Tungsten Carbide (WC-Co) and JIS SCM440 steel using Cu-Sn braze alloy has been studied. The effect of Sn content in the filler metals on the properties of brazed joints was investigated. The specimens were brazed under 1050°C to 1110°C for 5 to 15 minutes. The experimental results show that the maximum shear strength is 341±15MPa for the joints brazed at 1080°C for 10 min by using Cu-9Sn filler. Shear strength of the joints brazed at 1050°C and 1080°C increased as Sn content added to the braze alloy. However, joints brazed at 1110°C showed a decline in shear strength
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47

Hussain, A., R. Akhter, W. A. Farooq, and M. Aslam. "Laser Surface Alloying of Ni-Co Electroplated Low Carbon Steel." Key Engineering Materials 442 (June 2010): 137–43. http://dx.doi.org/10.4028/www.scientific.net/kem.442.137.

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Laser surface alloying of Ni-Co electroplated steel using 900 W CW CO2 laser to develop Fe-Ni-Co alloy on the surface is reported. Fe-Ni-Co alloys of different compositions are produced by varying the working speed from 0.25 m/min to 3m/min and laser spot size from 0.6 mm to 5mm. The development of microstructure in the melted zone is analysed in terms of composition variation and cooling rate. The microhardness of newly formed alloys reported here are three times higher as compared to base metal. Martensite is observed in the laser modified zone.
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48

Deng, Hong Xia, Hui Ji Shi, Seiji Tsuruoka, Hui Chen Yu, and Bin Zhong. "Studies on Fatigue Properties of Steel with Co-Based Alloy Hardfacing Coating." Advanced Materials Research 118-120 (June 2010): 161–65. http://dx.doi.org/10.4028/www.scientific.net/amr.118-120.161.

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The main task of this paper was to evaluate the influence of hardfacing technique and service temperature on the fatigue properties of heat-resistant steel X45CrSi9-3 coated with Co-based alloy Stellite 12. The results of rotating bending fatigue tests showed that at room temperature (RT), the fatigue strength of specimens welded by the acetylene gas welding (AGW) was lower than that of specimens welded by the plasma transferred arc welding (PTAW). For PTAW specimens, the fatigue strength at 500oC was much higher than that at RT. Two failure modes were presented, one was termed as the coating
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KOMOTORI, Jun, Ningshung QU, Masao SHIMIZU, and Katsuyuki SHIRAI. "Fatigue Properties of Thermally Sprayed Steel with Co-Based Self-Fluxing Alloy." Transactions of the Japan Society of Mechanical Engineers Series A 62, no. 604 (1996): 2687–92. http://dx.doi.org/10.1299/kikaia.62.2687.

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50

Alemohammad, Hamidreza, Shahrzad Esmaeili, and Ehsan Toyserkani. "Deposition of Co–Ti alloy on mild steel substrate using laser cladding." Materials Science and Engineering: A 456, no. 1-2 (2007): 156–61. http://dx.doi.org/10.1016/j.msea.2006.12.054.

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