Results 231 to 240 of about 143,288 (296)

Wear and microhardness behaviors of AA7075/SiC-BN hybrid nanocomposite surfaces fabricated by friction stir processing

, 2020
The wear resistance and microhardness behavior of hybrids consisting of wrought aluminum alloy AA7075 with different volume fractions of SiC and BN nano-powders were investigated experimentally.
Essam B. Moustafa, A. Melaibari, M. Basha   +2 more
semanticscholar   +1 more source

Microhardness characteristics of high-strength cement paste and interfacial transition zone at different curing regimes

Construction and Building Materials, 2019
In order to understand the influencing mechanisms of curing temperature on the performances of steam cured concrete further, the microhardness characteristics of the interfacial transition zone between cement paste and coarse aggregate under different ...
Meng Wang, You-jun Xie, G. Long, Cong Ma, Xiaohui Zeng   +4 more
semanticscholar   +1 more source

Microhardness and wear resistance of Al2O3-TiB2-TiC ceramic coatings on carbon steel fabricated by laser cladding

Ceramics International, 2019
Al2O3-TiB2-TiC ceramic coatings with high microhardness and wear resistance were fabricated on the surfaces of carbon steel substrates by laser cladding using different coating formulations.
Zhaoliang Li, Mumeng Wei, K. Xiao, Ziheng Bai, Wei Xue, C. Dong, Dan Wei, Xiaogang Li   +7 more
semanticscholar   +1 more source

Anisotropy of yttrium microhardness

Physica Status Solidi (a), 1981
Polar and azimuthal diagrams of the microhardness of yttrium single crystals are constructed. The polar diagram of the microhardness in the (112x) planes with the c axis is close in its form to an ellipsoid of rotation around the [0001] direction with axes 90 and 40 kg/mm2.
I. I. Papirov, V. V. Vorobev, A. I. Pikalov, N. I. Moreva   +3 more
openaire   +1 more source

Effect of Calcium and Fluoride Addition to Hydrogen Peroxide Bleaching Gel On Tooth Diffusion, Color, and Microhardness.

Operative dentistry, 2019
OBJECTIVES The aim of this study was to evaluate the effect of calcium and fluoride addition to a 35% hydrogen peroxide (HP) bleaching gel with regard to its diffusion through the tooth structure, enamel microhardness, and bleaching efficacy.
C. Torres, R. Zanatta, T. J. Silva, A. Borges   +3 more
semanticscholar   +1 more source

Heat treatment temperature-induced microstructure, microhardness and wear resistance of Inconel 718 produced by selective laser melting additive manufacturing

, 2019
Additive manufacturing (AM) has been becoming more widespread and its usage area has been increasing in different industries. However, the mechanical and microstructural properties of the metal parts printed by additive manufacturing required further ...
Y. Karabulut, E. Tascioglu, Y. Kaynak
semanticscholar   +1 more source

The Effect of Calcium Hydroxide and Nano-calcium Hydroxide on Microhardness and Superficial Chemical Structure of Root Canal Dentin: An Ex Vivo Study.

Journal of Endodontics, 2019
INTRODUCTION Calcium hydroxide (CH) and nano-calcium hydroxide (NCH) as intracanal medicaments may affect the physical and chemical properties of dentin.
M. Naseri, L. Eftekhar, Farshid Gholami, M. Atai, O. Dianat   +4 more
semanticscholar   +1 more source

Improving microhardness and wear resistance of 316L by TiO2 powder mixed electro-discharge treatment

Materials Research Express, 2019
Electro Discharge Treatment (EDT) has been carried in this study for the surface modification of 316 L stainless steel. The process is carried out in TiO2 powder mixed dielectric medium and assessed in terms of change in microhardness (MH) and wear ...
Gurpreet Singh, S. Sidhu, P. S. Bains, A. S. Bhui   +3 more
semanticscholar   +1 more source

The printability, microstructure, crystallographic features and microhardness of selective laser melted Inconel 718 thin wall

Materials & Design (1980-2015), 2018
The thin plate is a promising light-weight structure to broaden applications of Inconel 718 superalloy in aerospace and transportation industries. In the present work, selective laser melting (SLM) technology was applied to manufacture a series of ...
Huihui Yang, Jingjing Yang, Wenpu Huang, Zemin Wang, Xiaoyan Zeng   +4 more
semanticscholar   +1 more source

Ultra-microhardness of vacuum-deposited films I: Ultra-microhardness tester

Thin Solid Films, 1978
Abstract A Vickers type ultra-microhardness tester which is useful for the study of surface films thicker than a few tens of nanometres is described. A diamond triangular cone indenter with a tip radius of 120 nm is employed, and its penetration depth under a given load is observed.
Mineo Nishibori, Koreo Kinosita
openaire   +1 more source