Q235 钢表面TiN 陶瓷化与Cr-Mo 共渗表面强化耐腐蚀性能 - 材料工程.PDF

66 / 2007 11 Q235TiNCr-Mo Ceramic Process and Cr-Mo Infiltration of Carbon Steel for Improvement in Corrosion Resistance ( , ,,541004) G O Yuan(Guilin University of Electronic Technology, Guilin 541004, Guangxi, China) : Q235 Ti ,, 1600~ 3400HVX , , ( 200) , Q235 , Mo 4%(, ) , Cr 12% ,2.0%,+ , , X , M C , M C M C, 23 6 6 2 5Lm1100HV, 10% 5%3. 5%NaClH S (H S 5~ 8g/ L,NH # H O20g/L) , , 2 2 3 2 84, 11.67, 1. 15, 21. 15 : ; ; ; ;; ; : TG174. 445 : : 1001-4381(2007) 11-0066-05 Abstract: new technique that T iN coating is directly synthesized using plasma mult-i infiltration on the surface of 20 steel was introduced. The structure formed by this techniques was solid solution dif- fusing layer and TiN deposition layer that was metallurgical bonding with matrix and couldn. t pro- duced desquamation. The surface hardness of infiltrating layer was 1600~ 3400HV. T heresults of X- ray diffraction showed that the infiltrating layer surface was pure-T iN and the strongest diffraction a- pex was on the (200) crystal face processing obvious preferred orientation. In addition on the 20 steel surface Mo content reached about 4% and Cr content reached 12% around using double glow plasma Cr-Mo infiltration, and then ultra-saturation carbonization made surface carbon content reach 2% a- bove exceeding balancing carbon calculating values. Subsequently by quenching and low-tempering heat treatme