Improvements in P/M Green Strength using Micronized Cellulose Particles (MCP)
New P/M lubricant formulations implement micron-sized (“micronized”) cellulose particles (MCP) to create MCP-enhanced lubricants. Surprising increases in green strength, up to 70% for iron and even higher for stainless steel are obtained with standard transverse rupture bars shapes made with 0.75 wt-% additive concentrations in iron (MPIF F-0000) and 316L stainless steel powders in comparison with the same parts made under the same conditions with industry standard lubricantbinders of zinc stearate, ethylene-bis-stearamide (EBS), and oxidized polyolefin (OP) wax. Two specific forms of new MCP materials are used in these tests: micronized cotton fibers (MCF), and micronized starch particles (MSP). The findings support expectations of significantly increased process yields for green parts and related production cost savings.
Lucio Salgado and Francisco Ambrozio Filho
A. J. Henderson and R. Singh, "Improvements in P/M Green Strength using Micronized Cellulose Particles (MCP)", Materials Science Forum, Vols. 530-531, pp. 92-98, 2006