Saint-Gobain Abrasives, Inc.

Saint-Gobain Abrasifs

Eurokera

Eurokera S.n.c.

Cécile Jousseaume

Pablo Vilato

Kamila Plevacova

Marie Jacqueline Monique Comte

Philippe Lehuede

Gilles Querel

Richard W Hall

Paul S Dando

Nilanjan Sarangi

Sandhya Jayaraman Rukmani

Emmanuel Lecomte

Susanne Liebelt

Richard Di Caro

Sophie Papin

Thomas J Tschernig

Methods, compositions, and articles provide for LAS-type glass-ceramics having specific thermo-mechanical, optical and coloration characteristics to yield generally brown-grey products. The glass-ceramic materials may include as colorants iron oxide, vanadium oxide, chromium oxide, cobalt oxide, nickel oxide and/or cerium oxide.

Non-opaque arsenic-free beta-spodumene glass ceramic exhibiting brown-grey coloration

A transparent, colorless and non-scattering glass-ceramic plate of lithium aluminosilicate type and containing crystals of &#x3b2;-quartz structure, the chemical composition of which does not contain oxides of arsenic, of antimony and of neodymium, and includes the following constituents within the limits defined below, expressed as weight percentages: SiO55-75%; AlO12-25%; LiO 2-5%; NaO+KO 0-&#x3c;2%; LiO+NaO+KO 0-&#x3c;7%; CaO 0.3-5%; MgO 0-5%; SrO 0-5%; BaO 0.5-10%; CaO+BaO &#x3e;1%; ZnO 0-5%; TiO&#x2264;1.9%; ZrO&#x2264;3%; TiO+ZrO&#x3e;3.80%; SnO&#x2265;0.1%; SnO/(SnO+ZrO+TiO)&#x3c;0.1.

Vitroceramic plate

An abrasive article including a bonded abrasive body having abrasive particles contained within a bond material, the bond material including a vitreous material formed from a mixture having aluminum oxide (AlO), bismuth oxide (BiO), and boron oxide (BO), and wherein the mixture includes an amount (wt %) of aluminum oxide less than an amount (wt %) of bismuth oxide and the amount (wt %) of aluminum oxide is less than an amount (wt %) of boron oxide.

Bonded abrasive body and method of forming same

A bonded abrasive article is provided that includes abrasive grains within a bond matrix, the abrasive grains including cubic boron nitride (cBN) and the bond matrix including a polycrystalline ceramic phase. The bonded abrasive may have a Modulus of Rupture (MOR) of not less than about 40 MPa. Certain embodiments may have porosity, such as greater than about 5.0 vol %.

Bonded abrasive article and method of making

A bonded abrasive article is provided which includes abrasive grains made of cubic boron nitride within a bond matrix including a silicate. The bonded abrasive further includes a reaction product at the interface between the abrasive grains and bond matrix comprising a transition metal nitride.

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Paris, France

Cécile Jousseaume