Transfer of molybdenum disulfide to various metals

Sliding friction experiments were conducted with molybdenum disulfide single crystals in contact with sputter cleaned surfaces of copper, nickel, gold, and 304 stainless steel. Transfer of the molybdenum disulfide to the metals was monitored with Auger electron spectroscopy. Results of the investigation indicate molybdenum disulfide transfers to all clean metal surfaces after a single pass over the metal surface with film thickness observed to increase with repeated passes over the same surfaces. Large particle transfer occurs when the orientation of the crystallites is other than basal. This is frequently accompanied by abrasion of the metal. Adhesion of molybdenum disulfide films occurred readily to copper and nickel, less readily to 304 stainless steel, and even less effectively to the gold, which indicates a chemical effect

Alumina fiber strength improvement

The effective fiber strength of alumina fibers in an aluminum composite was increased to 173,000 psi. A high temperature heat treatment, combined with a glassy carbon surface coating, was used to prevent degradation and improve fiber tensile strength. Attempts to achieve chemical strengthening of the alumina fiber by chromium oxide and boron oxide coatings proved unsuccessful. A major problem encountered on the program was the low and inconsistent strength of the Dupont Fiber FP used for the investigation

Milk, the Food of Foods

This pamphlet was published by the authority of the Hon. James G. Gardiner, Minister of Agriculture, Ottawa, Canada. It is recorded as Publication 635, Household bulletin 19. The pamphlet was produced to promote the nutritional benefits and value of milk in the diet. The various types of milk are listed. There are chapters dealing with the care of milk from producer to consumer, consumption and uses of milk. There are recipes for sauces, soups, lunch and dinner dishes milk shakes and milk dishes for the convalescent