期刊
MATERIALS CHEMISTRY AND PHYSICS
卷 262, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2021.124297
关键词
Nickel-phosphorus coating; Heat treatment; Phase transformation; Forming accuracy; Precision glass molding
资金
- National Basic Research Program of China [2015CB059900]
- National Natural Science Foundation of China [51775046, 51875043, 52005040]
- Fok Ying Tong Education Foundation for Young Teachers in the Higher Education Institutions of China [151052]
An annealed high-phosphorus electroless Ni-P coating was developed for precision glass molding. The optimal heat treatment condition was found to be at an annealing temperature of 600 degrees C with a heating rate of 5 degrees C/min. Machining microgrooves on the coating surface improved hardness and modulus, aiding in thermal deformation resistance and enhancing forming accuracy in precision glass molding.
An annealed high-phosphorus electroless Ni-P coating was developed as the mold material for precision glass molding. The coating with a phosphorus content of 11.6 wt% was prepared on heat-resistant stainless steel via an intermittent ultrasonic-assisted electroless plating method. The effects of annealing temperature and heating rate on phase transformation, grain size variation, and mechanical properties were investigated. An annealing temperature of 600 degrees C with a heating rate of 5 degrees C/min was determined to be the optimal choice for heat treatment. Microgrooves were machined on the coating surface. After heat treatment, the increased hardness and modulus helped the microgrooves on the coating resist thermal deformation during the PGM process. The PV value decreased from 0.58 to 0.32 mu m, and the surface roughness decreased from Sa 104.5 to Sa 62.6 nm. The mold produced by heat-treated coating was beneficial for improving the forming accuracy of precision glass molding.
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