Arshuk M.V.

Diffusion Coatings with the Participation of Titanium, Alumi¬nium and Silicon on Surface of the Steel 12X18H10T

Patterns of forming a multilayered diffusion coatings after complex saturation of titanium, aluminum and silicon to steel to improve heat resistance 12Cr18Ni10Ti were obtained and studied. The possibility of obtaining titanium-aluminum-silicon layers on steel 12Cr18Ni10Ti powder in containers with a gate in unpressurized conditions at temperature 1050 C and with duration 4 hours was studied. As initial components powders of titanium, aluminum, silicon, aluminum oxide, ammonium chloride were used.

Corrosion of Steel Gas Chromoaluminized 12Х18Н10T

This paper presents the research results of chrome-calorizing of the steel 12X18Н10T. We show how to obtain chromo-calorizing coatings on the surface of the steel 12X18H10T with titanium nitride. We coat the surface by combining two processes: physical 12X18H10T vapor deposition of titanium nitride and diffusion chromo-calorizing conducted by powder in containers with fusible closure under reduced pressure at a temperature of 1050 °C for 3 hours. We determine the phase and chemical composition, thickness and microhardness of coatings before and after the heat resistance test.

Diffusion coating with titan in aluminum and 12x18h10t nitrated steel

This study reveals the results of comprehensive treatment of 12X18H10T steel. We demonstrate the possibility of combining nitrating steel in the ammonia medium at a temperature 540 °С for 20 hours followed by titanium alumunizing relying on the powder method in containers with the consumable gate under the reduced pressure at a temperature 1050 °С for 0,5–6 hours. In addition, we examine the structure, phase and chemical composition of the obtained coatings. Finally, we describe the influence of nitrating on formation of the surface barrier layer of titanium nitride TiN.

The Corrosion Resistance of Chrome-calorized Steel 12Х18N10T

The paper under scrutiny presents the research results of chrome-calorized steel 12Х18N10T. Moreover, we demonstrate that it is possible to obtain complex chrome-calorized coating with titanium nitride TiN on the surface of the steel 12Х18N10T. To obtain this coating, we combine two processes: physical vapor deposition of titanium nitride and diffusion of chrome-calorizing conducted through the powder method in containers with fusible gate under reduced pressure at 1050 C for 3 hours. Hence we obtain the structure, phase and chemical composition of coatings.

Titanium aluminizing of technical iron in the closed reactionary space in the chlorine medium

Our study highlights physical and chemical conditions for titanium aluminizing of alloys in the closed reactionary space in the chlorine medium at low pressure. In addition, we+ show that simultaneous saturation of alloys by titanium and aluminum is possible in a wide range of saturated elements densities in the original mixture. Finally, we consider phase and chemical compositions, the structure of diffusion layers, formed on the technical iron after titanizing, nitriding with further titanizing, and titanium aluminizing.

Titanium aluminizing of the vk8 nitrated hard alloy in the enclosed space

We investigate the phase and chemical composition, structure, characteristics and operational properties of the VK8 nitrated hard alloy after diffused titanium aluminizing in the mixture of titanium and aluminium powders in the enclosed space. We demonstrate that the strength of films produced and covered with the VK8 nitrated hard alloy increases by several times at 12Х18Н9Т steel cutting as compared to the initial alloy strength.