Preparation and property of chromium carbide thermal diffusion coating on cold working die materials

Yuan, Zhihua; Wang, Zhijun; Zhang, Weiqiang; Wang, Zhengjie; Duan, Xiaoxu

doi:10.1007/s11595-010-0051-x

Cited by 9 publications

(6 citation statements)

References 9 publications

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“…The nucleation occurs in the surface. After appearing the carbide nucleus, the carbide layer begins to grow [1,2,4,8].…”

Section: Resultsmentioning

confidence: 99%

“…TRD is a process of coating steels with a hard and wear-resistant layer of carbides, nitrides, or carbonitrides [1,2,3,4]. The TRD process is very useful for surface-treating products such as steel tools because the formed carbide coating provides high resistance to abrasive wear, adhesive wear, fretting wear, corrosion, and oxidation, which cannot be provided by other conventional surface treatment methods [4,6].…”

Section: Introductionmentioning

confidence: 99%

“…Chromium metal powder, ferro chromium, chromium halides or chromium oxide may be used as the source of chromium. It was shown that using ferro chromium is more economical [2,7]. Carbide-forming elements (such as chromium) dissolve into borax.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Salt Bath Composition on the Chromium Diffusion on Plain Carbon Steels by TRD Process

Ghadi

Soltanieh

Zarchi

2012

DDF

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The thermo-reactive diffusion (TRD) process is used for diffusing an element to the metallic steel substrate. TRD is carried out by using either salt bath or fluidized bed methods. In this research, the molten salt bath method is used. Ferro chromium was dissolved in the molten borax as the source of chromium in the salt. Samples of cylindrical shape of plain carbon steel with 10 mm diameter and 20 mm height were treated at 1000°C for 14 hours in different baths including either low carbon ferro chromium (LCFC) or high carbon ferro chromium (HCFC) powder. The purpose of this research is to investigate the effect of the salt bath composition on the diffusion of chromium and formation of chromium compound layer on plain carbon steel by using the salt bath method. The coating thickness layers were measured by SEM. The different phases formed on the samples, due to different amounts of carbon in treating salt bath, were determined by X-ray diffraction. It was found that in molten borax salt with high carbon content (high carbon ferro chromium) very few amount of chromium diffused into the plain carbon steel. The thickness of the diffused chromium layer in low and high carbon content ferro chromium in molten borax, is around 32±8 µm and 6.8±1.2 µm, respectively. A number of tests were conducted to address this effect.

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“…The nucleation occurs in the surface. After appearing the carbide nucleus, the carbide layer begins to grow [1,2,4,8].…”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of Salt Bath Composition on the Chromium Diffusion on Plain Carbon Steels by TRD Process

Ghadi

Soltanieh

Zarchi

2012

DDF

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“…After salt bath chromizing, a compound layer is formed, which can significantly improve the performance of metals [5]. However, for obtaining the effective thickness of chromium carbide coating, a salt bath must be carried out at reasonable temperature and time [6].…”

Section: Introductionmentioning

confidence: 99%

The Enhancement Effect of Salt Bath Chromizing for P20 Steel

et al. 2020

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The TD (Thermal Diffusion) salt bath process is used to obtain a super hard carbide coating on the material surface by utilizing the mechanism of metal thermal diffusion. In this paper, chromium carbide coating was prepared on P20 hot-pressing die steel by the TD salt bath chromizing process. Characterization of the modified surface layer was made by means of scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDS), a micro-hardness tester and an automatic scratch tester. The influence rules of different salt bath times and temperatures on the growth thickness of the cladding layer were explored through experiments, and the optimum salt bath process scheme was determined as a temperature of 960 °C and time of 6 h. The chromium carbide coating with a thickness similar to that of chromium plating was prepared, and the average thickness of the coating was about 8–10 μm. The results showed that hardness and bonding strength of chromium carbide coating are higher than that of electroplated chromium coating. The combination of chromium carbide coating and matrix is metallurgical, while the electroplated chromium coating is physical. Immersion corrosion test results show that both coatings have good corrosion resistance in a 65% nitric acid solution.

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“…These ceramics mainly comprise transition metal carbides and nitrides [4]. As one of the most widely used ceramic coatings, chromium carbide coatings have been extensively used as protective coating on various tools, dies and sliding bearing mainly due to its high resistance to wear, corrosion and oxidation and its high hardness [5,6].…”

Section: Introduction mentioning

confidence: 99%

Evaluation of Chromium Carbide Coatings on AISI 52100 Steel Obtained by Thermo-Reactive Diffusion Technique

Zong¹,

Jiang²,

Zhao³

2019

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In this study, chromium carbide coating obtained by thermo-reactive diffusion (TRD) process on AISI 52100 steel, prepared by packed method at temperature of 850 °C for 2, 4, 6 and 8 h, were investigated by performing a series of tests. The chromium carbide coating was characterized by scanning electron microscopy, X-ray diffraction (XRD), Micro-Vickers hardness test and Daimler-Benz Rockwell-C adhesion test. The chromium carbide layer produced on the AISI52100 steel exhibited a smooth and flat morphology. Depending on treatment time, the coating had a thickness of 3.2-8.5 μm. XRD analysis revealed the existence of Cr7C3 and (Cr,Fe)7C3 compounds. The hardness of the surface was increased from 723 to 1730-1920 HV0.025 after the coating process. The adhesion strength quality of the coating is correlated to HF2 to HF3 according to the VDI 3198 norm. Comparision of wear performance between chromium carbide coating and substrate showed that the coating can significantly improve wear resistance of the material. Friction coefficient decreased from the 0.46 to 0.37 and wear weight loss decreased by 89.3 %.

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Preparation and property of chromium carbide thermal diffusion coating on cold working die materials

Cited by 9 publications

References 9 publications

Effect of Salt Bath Composition on the Chromium Diffusion on Plain Carbon Steels by TRD Process

Effect of Salt Bath Composition on the Chromium Diffusion on Plain Carbon Steels by TRD Process

The Enhancement Effect of Salt Bath Chromizing for P20 Steel

Evaluation of Chromium Carbide Coatings on AISI 52100 Steel Obtained by Thermo-Reactive Diffusion Technique

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