Results 211 to 220 of about 104,890 (283)

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

Fluoride treatment and microhardness of dentin

The Journal of Prosthetic Dentistry, 1979
Effects of various fluoride treatments on the microhardness of human dentin were determined. Treatment with acidulated phosphate-fluoride at pH 3.0 induced a significant (p less than .05) softening when compared to treatment with water. APF at pH 4.0 did not bring about a significant change.
F, Seaman, I L, Shannon
openaire   +2 more sources

Microhardness and microhardness anisotropy of tungsten

Transactions of the American Institute of Mining, Metallurgical and Petroleum Engineers, 1968
Both doped and undoped W single crystals exhibit hardness anisotropy with respect to the direction of testing in each of the crystallographic planes investigated. The hardness anisotropy of undoped, single-crystal W is rather pronounced in the {001} and {110} planes but very minor in the {111} planes.
Rieck, G.D., Vaessen, G.H.G., Vogel, D.L.   +2 more
openaire   +1 more source

On the Definition of Microhardness

Metallurgical Transactions A, 1983
Microhardness testing can be a very useful tool for studying modern materials, but is plagued by well-known experimental difficulties. Reasons for the unusual behavior of hardness data at very low loads are explored by Monte Carlo simulation. These simulations bear remarkable resemblance to the results of actual hardness experiments.
openaire   +1 more source

Microhardness of alloys for porcelain veneering

The Journal of Prosthetic Dentistry, 1982
R e s t o r a t i v e materials for fixed prosthodontics must be capable of withstanding masticatory forces. The mechanical properties of the high-fusing gold alloys differ from those of type III and type IV dental casting alloys. '-'~ The microstructure and mechanical properties of the noble dental alloys are dependent on the composition of the alloy.'
A, Yli-Urpo, E, Uusalo
openaire   +2 more sources

Microhardness of Polymers

2000
This book, first published in 2000, deals with the micromechanical characterization of polymer materials. Particular attention is given to microhardness as a technique capable of detecting a variety of morphological and textural changes in polymers. A comprehensive introduction to the microhardness of polymers is provided, including descriptions of ...
F. J. Baltá Calleja, S. Fakirov
openaire   +1 more source

Microhardness testing procedure and effect of composition on the microhardness of brittle materials

Soviet Powder Metallurgy and Metal Ceramics, 1964
A procedure is proposed for determining the true values of microhardness of brittle materials.
V. N. Vigdorovich, A. Ya. Nashel'skii
openaire   +1 more source

Effect of impurities on the microhardness of borax decahydrate

Powder Technology, 2010
Microhardness of borax decahydrate single crystals grown from pure and impure borax solutions was measured. It was found that the microhardness of borax decahydrate crystals showed clear load dependence. The results obtained from Meyer Law indicated that
SAYAN, PERVİZ, KIRAN YILDIRIM, BERÇEM, SARGUT, SİBEL   +2 more
exaly   +2 more sources

Microhardness of phosphate glasses

Journal of Non-Crystalline Solids, 1994
Abstract Vickers microhardness values of some binary and ternary phosphate glasses were determined. An increase of Vickers hardness was obtained on addition of a second alkali oxide (Li2O or K2O) or a divalent oxide (CaO or ZnO) to a sodium phosphate glass. The microhardness values were also seen to be a function of the applied load.
S.N. Salama, H.A. El-Batal
openaire   +1 more source

Effects of charcoal-based whitening toothpastes on human enamel in terms of color, surface roughness, and microhardness: an in vitro study

Clinical Oral Investigations, 2021
U. Koç Vural, Z. Bagdatli, Ayfer Ezgi Yılmaz, F. Yalçın Çakır, E. Altundaşar, S. Gurgan   +5 more
semanticscholar   +1 more source