Mukridz Md Mohtar, Engr.
http://dspace.unimap.edu.my:80/xmlui/handle/123456789/34239
2024-03-28T22:49:21ZEffect of heat treatment on Ni-P-Cg(Graphite)-SiC composite coated cast AlSi alloy
http://dspace.unimap.edu.my:80/xmlui/handle/123456789/35548
Effect of heat treatment on Ni-P-Cg(Graphite)-SiC composite coated cast AlSi alloy
Zainal Arifin, Ahmad; Mukridz, Md Mohtar, Engr.; Zaidi, Mohd Ripin, Dr.
The study presents the effect of heat treatment on electroless N-P-Cg-SiC composite coated cast AlSi (ADC12) alloy. No significant changes are noted on the average surface roughness and surface morphology of the coating film with different heat treatment processes. The growth of the hard Ni3P phase in the electroless Ni-P-Cg-SiC composite coating after heat treatment at 400°C for one hour strongly enhance the micro hardness of the AlSi-alloy (ADC12) surface from originally 101HV to 689HV. However, the micro hardness of the cast AlSi-alloy substrate decreases form 100HV to 60HV.
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2013-01-01T00:00:00ZElectroless Ni-P-Cg(Graphite)-SiC composite coating on cast AlSi alloy
http://dspace.unimap.edu.my:80/xmlui/handle/123456789/35528
Electroless Ni-P-Cg(Graphite)-SiC composite coating on cast AlSi alloy
Mukridz, Md Mohtar, Engr.; Zaidi, Mohd Ripin, Dr.; Zainal Arifin, Ahmad
The study presents the electroless N-P-Cg-SiC composite coating on cast AlSi (ADC12) alloy where the bath temperature is maintained at 90°C, pH level is controlled between 4.5 to 5.0 and stirred at 450 rpm with mechanical stirrer to avoid particles sedimentation. The increase of the coating film thickness is very insignificant after one hour of coating duration. This outcome is supposed to be due to inconsistent chemical concentration in the plating bath after this period. The nominal coating thickness of 39 μm is achieved after the substrate is immersed for 1 hour in four consecutive plating baths, respectively. The coating film is also successfully adhered to the substrate surface with the SiC and Cgparticles are homogenously distributed.
Link to publisher's homepage at http://www.scientific.net/
2013-01-01T00:00:00Z