Hardness, friction and wear characteristics of electrodeposited RE Ni W P B 4C PTFE composite coatings were studied, and the reason for these fine characteristics was explained in respect of structure. The results sho...Hardness, friction and wear characteristics of electrodeposited RE Ni W P B 4C PTFE composite coatings were studied, and the reason for these fine characteristics was explained in respect of structure. The results show that 1) the structure of RE Ni W P B 4C PTFE composite coatings experiences a transformation process from amorphous to mixture then to crystal as the heat treatment temperature rises; 2) incorporating of B 4C greatly increases the hardness of the coating; 3) the wear resistance of the coating is best with heat treatment for 1?h at 300?℃, which is greatly superior to that of the other traditional coatings.展开更多
以B C为硼源,以及MoFe粉和Fe粉为基础原料,采用真空液相烧结工艺制备三元硼化物金属陶瓷。研究了4 Mo FeB三元硼化物烧结过程中相变和微观组织的变化及力。结果表明:使用该种方法制备Mo FeB基三元硼化物金属陶2222瓷,随着烧结温度的升高...以B C为硼源,以及MoFe粉和Fe粉为基础原料,采用真空液相烧结工艺制备三元硼化物金属陶瓷。研究了4 Mo FeB三元硼化物烧结过程中相变和微观组织的变化及力。结果表明:使用该种方法制备Mo FeB基三元硼化物金属陶2222瓷,随着烧结温度的升高,晶粒形貌由近球形转变为方形,晶粒组织先聚集后分散,晶粒尺寸逐渐增大。在烧结温度为1350℃试样的综合性能最佳,其硬度可达HRC70.1。展开更多
文摘Hardness, friction and wear characteristics of electrodeposited RE Ni W P B 4C PTFE composite coatings were studied, and the reason for these fine characteristics was explained in respect of structure. The results show that 1) the structure of RE Ni W P B 4C PTFE composite coatings experiences a transformation process from amorphous to mixture then to crystal as the heat treatment temperature rises; 2) incorporating of B 4C greatly increases the hardness of the coating; 3) the wear resistance of the coating is best with heat treatment for 1?h at 300?℃, which is greatly superior to that of the other traditional coatings.
基金National Natural Science Foundation of China(11375131,U1432244)the Royal Society-NSFC International Exchanges Funding(IE141043,11511130051)the Fundamental Research Funds for Central Universities
文摘以B C为硼源,以及MoFe粉和Fe粉为基础原料,采用真空液相烧结工艺制备三元硼化物金属陶瓷。研究了4 Mo FeB三元硼化物烧结过程中相变和微观组织的变化及力。结果表明:使用该种方法制备Mo FeB基三元硼化物金属陶2222瓷,随着烧结温度的升高,晶粒形貌由近球形转变为方形,晶粒组织先聚集后分散,晶粒尺寸逐渐增大。在烧结温度为1350℃试样的综合性能最佳,其硬度可达HRC70.1。