J.D.B. de Mello

TL;DR: In this article, 15 high-chromium white cast alloys containing different chromium contents (16.5 to 32.5%Cr) and molybdenum (Mo free to 9.1%Mo) are examined.

TL;DR: In this paper, a series of different tribo-tests was carried out: (i) Reciprocating linear scuffing test with 7 n incremental loading every 10min up to 910 n; (ii) constant load (10 n, 5h duration), reciprocating sliding tests assessing friction coefficient and wear rates of both specimen and counter body; (iii) free ball micro-abrasion tests using soft, fine abrasive particles.

TL;DR: In this article, the effect of the actual environment (refrigerant) present in hermetic compressors on the tribological behaviour of a Si-rich multifunctional DLC coating deposited on 1020 steel and tested against 52100 steel pins was analyzed.

TL;DR: In this article, the effect of temperature, normal load and preoxidation on the tribological behavior of two multi-component ferrous alloys (high-speed steel and white cast iron) is analyzed.

TL;DR: In this paper, a micro-scale abrasive wear test has gained large acceptance in universities and research centers, being widely used in studies on the abrasive wears of materials, and a quantity called test severity (Stest) has been derived to relate the test severity with the abrasives wear mode transition, taking into account the hardness of the materials; the contact pressure (P) between the specimen and the ball and the equipment configuration (fixed-ball or free-ball) Tests were conducted with balls of AISI 52100 steel and specimens of ISO P20 cement