EFFECT OF HEAT TREATMENT ON THE TRIBOLOGICAL PROPERTIES OF DOUBLE- LAYER ELECTROLESS NI-P/NI-B-BN NANOCRYSTALLINE COMPOSITE COATING

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BAIBORDI AMIN; BINA MOHAMMAD HOSSEIN; AMINI KAMRAN; DEHGHAN ABOALGHASEM

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Journal: Journal of Advanced Processes in Materials Engineering Year:2012 | Volume:6 | Issue:3 (22) Page(s): 19-27

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Title

EFFECT OF HEAT TREATMENT ON THE TRIBOLOGICAL PROPERTIES OF DOUBLE- LAYER ELECTROLESS NI-P/NI-B-BN NANOCRYSTALLINE COMPOSITE COATING

Author(s)

BAIBORDI AMIN | BINA MOHAMMAD HOSSEIN | AMINI KAMRAN | DEHGHAN ABOALGHASEM | Issue Writer Certificate

Keywords

ELECTROLESS NICKEL-BORON COATINGQ3

HEAT TREATMENTQ2

CORROSIONQ2

ABRASION RESISTANCEQ2

COEFFICIENT OF FRICTIONQ2

Abstract

In this study the effect of HEAT TREATMENT on the hardness and wear resistance of electroless Ni-P/Ni-B-BN composite Coating was evaluated. Firstly electroless Ni-P Coating layer, with a thickness of 15 microns, and electroless Ni-B-BN coating, with a thickness of 10 microns, on the surface of Ck45 steel samples were deposited, respectively. Samples heat treated at 300, 400 and 500oC were studied. The effects of HEAT TREATMENT on the morphology, microstructure and wear behavior of coatings were investigated by means of scanning electron microscopy, X-ray diffraction and pin on disk wear test at ambient temperature. The hardness of the coatings in two states before and after HEAT TREATMENT were measured by micro Vickers hardness tester and the effect of HEAT TREATMENT temperature on the hardness of coatings was evaluated. The results of SEM examination showed that the morphology of semi-amorphous structure cauliflower was formed. The X-ray diffraction test revealed that the hard-phase crystallization and deposition of nickel borides (Ni3B) in the nickel. The typical HEAT TREATMENT at 400oC, had the highest hardness. Pin on disc wear test results prevailed that HEAT TREATMENT at 400oC reduced the friction coefficient. The HEAT TREATMENT at 400oC led to a nanocrystalline structure, therefore, the hardness and wear resistance of the amorphous to the crystalline structure and the change in coverage due to the hard phase Ni3B increased.

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References

A NEW METHOD TO MEASURE NANO SIZE CRYSTALS BY SCHERRER EQUATION USING XRD

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APA: Copy

BAIBORDI, AMIN, BINA, MOHAMMAD HOSSEIN, AMINI, KAMRAN, & DEHGHAN, ABOALGHASEM. (2012). EFFECT OF HEAT TREATMENT ON THE TRIBOLOGICAL PROPERTIES OF DOUBLE- LAYER ELECTROLESS NI-P/NI-B-BN NANOCRYSTALLINE COMPOSITE COATING. ADVANCED PROCESSES IN MATERIALS, 6(3 (22)), 19-27. SID. https://sid.ir/paper/172661/en

Vancouver: Copy

BAIBORDI AMIN, BINA MOHAMMAD HOSSEIN, AMINI KAMRAN, DEHGHAN ABOALGHASEM. EFFECT OF HEAT TREATMENT ON THE TRIBOLOGICAL PROPERTIES OF DOUBLE- LAYER ELECTROLESS NI-P/NI-B-BN NANOCRYSTALLINE COMPOSITE COATING. ADVANCED PROCESSES IN MATERIALS[Internet]. 2012;6(3 (22)):19-27. Available from: https://sid.ir/paper/172661/en

IEEE: Copy

AMIN BAIBORDI, MOHAMMAD HOSSEIN BINA, KAMRAN AMINI, and ABOALGHASEM DEHGHAN, “EFFECT OF HEAT TREATMENT ON THE TRIBOLOGICAL PROPERTIES OF DOUBLE- LAYER ELECTROLESS NI-P/NI-B-BN NANOCRYSTALLINE COMPOSITE COATING,” ADVANCED PROCESSES IN MATERIALS, vol. 6, no. 3 (22), pp. 19–27, 2012, [Online]. Available: https://sid.ir/paper/172661/en

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