Method of making an efficiency enhanced fluid pump or compressor

A method of making a high efficiency fluid pumping apparatus for gas compressors or liquid transfer, comprising:

• (a) forming aluminum alloy based relativelymovable parts that entrain and effect a pumping action of a fluid, said parts having surfaces that cyclically merge together and move apart to transfer fluid that places a shear load on said surfaces;
• (b) rough machining said surfaces to a surface finish of 100-150 micro inches;
• (c) preparing said rough machined surface by etching or phosphating;
• (d) depositing a coating on said prepared surfaces by one of room temperature spraying, transfer film rolling and thermal spraying, said coating consisting of a mixture of resin and solid lubricant particles, said solid lubricant particles having an average particle size of 10 microns or less, said coating being deposited in a thickness to create a slight interference fit at said zone;
• (e) slowly heating said deposited coating to the temperature level of 200.degree. F. and holding said heating for about 15 minutes followed by heating to 375.degree.-400.degree. F. for about 15 minutes;
• and
• (f) operating said apparatus to abrade said coating to essentially a zero clearance at said zones.