Improvement of thermal stability of diamond by adding Ti powder during sintering of diamond/borosilicate glass composites

Zhang, X.H.; Wang, Y.H.; Zang, Jianbing; Cheng, Xiaozhe; Xu, Xipeng; Lu, Jing

doi:10.1016/j.jeurceramsoc.2011.04.009

Cited by 23 publications

(3 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Some means have been proposed with the purpose to enhance the oxidation resistances of the diamond-related materials, like the synthesis of nanotwinned diamond, 12 the protective coating on diamond grits, 7 and the powder addition into the diamond−borosilicate composites. 13 However, such means are still not practical for most relevant applications of, for example, the monocrystalline diamond or the polycrystalline diamond films. Impurity incorporations into the diamonds, which are initially developed for modifying electrical and semiconductive features of diamonds, 14 can also affect their oxidation resistances.…”

Section: Introductionmentioning

confidence: 99%

“…Oxygen-terminated intrinsic diamond materials, , with the oxidation resistances, , have been well studied. Some means have been proposed with the purpose to enhance the oxidation resistances of the diamond-related materials, like the synthesis of nanotwinned diamond, the protective coating on diamond grits, and the powder addition into the diamond–borosilicate composites . However, such means are still not practical for most relevant applications of, for example, the monocrystalline diamond or the polycrystalline diamond films.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Selective Control of Oxidation Resistance of Diamond by Dopings

Wang

Song

Wang

et al. 2020

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

A method based on the density functional theory calculations is proposed for predicting the influences of dopants on the diamond oxidation, by evaluating the O adsorption energy, chemical bond weakening related to desorption, and probable products. It is proven by verification tests that oxidation resistances of the diamond materials can be indeed selectively controlled (e.g., −36 to 54.3% for diamond films, −36.5 to 45.1% for diamond grits) by adding various doping sources ((CH 3 O) 3 B, Si(OC 2 H 5 ) 4 , N 2 , and CO(NH 2 ) 2 ), attributed to their direct impurity incorporation, or modified gas chemistry. B and Si dopings can improve the oxidation resistance, but the addition of N 2 or urea plays an opposite role. Reactive ion etching and chemomechanical polishing tests are also accomplished, further demonstrating the influences of dopings on oxidation-related processes. This study paves the way for enhancing the efficiencies of the ultraprecision machining and micro−nano machining on the diamonds. Most importantly, the proposed prediction method can be potentially used in similar cases with other dopants and in other materials.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Selective Control of Oxidation Resistance of Diamond by Dopings

Wang

Song

Wang

et al. 2020

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

show abstract

“…Accordingly, a lot of previous studies focused on the improvement of the bonding of metal matrices to diamonds. [2][3][4][5][6][7] Unfortunately, due to the chemical inertness of diamond, it is quite difficult to let diamonds react with most metal elements such as Fe, Cu, Sn, Co and Ni only at the conditions of hot pressing, which is the most popular powder metallurgical process for the fabrication of diamond tools used in the machining of stone.…”

Section: Introductionmentioning

confidence: 99%

Comparison of brazed and sintered diamond tools for grinding of stone

Tie

Zhang

et al. 2014

Materials Research Innovations

View full text Add to dashboard Cite

The present study was undertaken to compare the characteristics of two typical diamond tools used for the grinding of natural stone materials. Powder metallurgical sintering and brazing were adopted to fabricate two kinds of diamond tools: sintered and brazed tools. The comparison was conducted for the two diamond tools from three aspects: the bonding of metal matrix to diamonds, the evaluation of diamond retention, and tool wear process. It was found that the bonding of brazing alloy was rather different from that in the sintered tools, thereby leading to a totally different method for assessing the bonding of bond materials to diamonds as well as different wear mechanisms for the diamond tools in grinding.

show abstract