ES2526221T3 - Granos de alúmina-circonia fundidos - Google Patents

Granos de alúmina-circonia fundidos Download PDF

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ES2526221T3
ES2526221T3 ES10747292.0T ES10747292T ES2526221T3 ES 2526221 T3 ES2526221 T3 ES 2526221T3 ES 10747292 T ES10747292 T ES 10747292T ES 2526221 T3 ES2526221 T3 ES 2526221T3
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zirconia
rest
twenty
sio2
fused alumina
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Samuel Marlin
David Langohr
Sylvain Petigny
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Saint Gobain Centre de Recherche et dEtudes Europeen SAS
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Abstract

Grano fundido que presenta el análisis químico siguiente, en porcentajes en peso, ZrO2 + HfO2 : 38,0 a 46,0 % Al2O3 : resto hasta 100 % SiO2 : 0,20 a 0,60 % Y2O3 : 0,45 a 0,70 % TiO2 : 1,00 a 2,00 % otros elementos, expresados en forma de óxido: < 1,00 %, estando comprendida la relación Y2O3/SiO2 entre 0,80 y 2,00, y representando la fase cuadrática entre 60 y 90 % de la masa de circonia, estando el resto en forma monoclínica.

Description

imagen1
imagen2
imagen3
imagen4
E10747292
16-12-2014
Se mide el porcentaje másico de circonia monoclínica a partir de la relación de áreas de los picos (111) y (111) de la circonia monoclínica y del pico (111) de la circonia estabilizada según la fórmula siguiente, después de tratamiento de desconvolución con la ayuda del software TOPAS P, siendo la función de desconvolución una pseudo-voigt:
100 ⋅ρ ⋅1,311área
mono mono
% de circonia monoclínica =
ρ ⋅1,311área +ρ ⋅ área
mono mono estab estab
siendo ρmono la densidad de la circonia monoclínica, igual a 5,8 g/cm3, y siendo ρestab la densidad de la circonia
3
estabilizada, igual a 6,1 g/cm. 10 El porcentaje másico de circonia estabilizada se da por la fórmula siguiente:
% de circonia estabilizada = 100 % de circonia monoclínica
En los granos según la invención ensayados, la circonia estabilizada está enteramente en la forma cristalográfica cuadrática, siendo el resto circonia en la forma cristalográfica monoclínica. 15 Los porcentajes de circonia cuadrática se expresan con relación a la circonia total cristalizada.
Las tablas 1 y 2 siguientes resumen los resultados obtenidos.
20 El ejemplo comparativo 1* es un grano cuya composición es cercana a la del ejemplo 5 del documento JP5922772, y el ejemplo comparativo 2* es un grano según el documento US 4.457.767.
Tabla 1
Ejemplo
ZrO2+HfO2 (%) Al2O3 (%) SiO2 (%) TiO2 (%) Y2O3 (%) Na2O (%) MgO (%) CaO (%) Otros (%) Y2O3/SiO2 Zirconia cuadrática (%)
1*
42,7 Resto hasta 100% 0,1 1,16 0,85 <0,05 <0,05 0,06 0,12 8,5 100
2*
38,5 Resto hasta 100% 0,30 0,12 0,80 <0,05 0,08 0,07 0,07 2,66 87
3
40,6 Resto hasta 100% 0,50 1,53 0,67 <0,05 <0,05 0,04 0,25 1,34 76
4
41,7 Resto hasta 100% 0,39 1,54 0,57 <0,05 <0,05 0,05 0,23 1,46 85
5
42,5 Resto hasta 100% 0,40 1,56 0,54 <0,05 <0,05 0,05 0,24 1,35 87
6
38,4 Resto hasta 100 % 0,57 1,49 0,57 <0,05 <0,05 0,06 0,28 1,00 74
7
42 Resto hasta 100 % 0,58 1,48 0,53 <0,05 <0,05 0,04 0,15 0,91 65
8
42,2 Resto hasta 100 % 0,58 1,51 0,57 <0,05 <0,45 0,06 0,20 0,98 67
9**
37,7 Resto hasta 100 % 0,66 1,51 0,57 <0,05 <0,05 0,04 0,27 0,86 72
10**
39,5 Resto hasta 100 % 0,18 1,11 0,43 <0,05 <0,05 0,05 0,24 2,39 91
11
38,1 Resto hasta 100 % 0,6 1,54 0,59 <0,05 <0,05 0,06 0,30 0,98 64
12**
40,9 Resto hasta 100 % 0,53 0,71 0,4 <0,05 <0,05 0,05 0,25 0,75 57
13**
42,6 Resto hasta 100 % 0,52 3,21 0,3 <0,05 <0,05 0,04 0,26 0,58 78
14**
39,7 Resto hasta 100 % 0,53 0,68 0,42 <0,05 <0,05 0,05 0,1 0,79 55
15
41,3 Resto hasta 100 % 0,59 1,59 0,5 <0,05 <0,05 0,05 0,29 0,85 71
16
43,4 Resto hasta 100 % 0,44 1,62 0,53 <0,05 <0,05 0,04 0,26 1,20 79
17
45,3 Resto hasta 100 % 0,38 1,61 0,49 <0,05 <0,05 0,04 0,27 1,29 74
25 ** : Ejemplos no de la invención
* : Ejemplos comparativos (no de la invención) Tabla 2
6
E10747292
16-12-2014
Ejemplo
Relación S Pmáx tmáx
% de mejora / ejemplo 1*
% de mejora/ ejemplo 2* % de reducción/ ejemplo 1* % de reducción/ ejemplo 2* % de mejora/ ejemplo 1* % de mejora/ ejemplo 2*
1*
- - - - - -
2*
- - - - - -
3
34 39 12 13 24 26
4
18 22 6 7 19 20
5
28 33 21 22 25 27
6
14 19 6 7 23 25
7
15 19 17 18 20 22
8
16 21 23 24 17 19
9**
2 6 2 3 7 9
10**
6 9 3 4 10 12
11
10 15 15 16 17 19
12**
-3 1 -16 -14 -4 -3
13**
7 13 19 20 0 1
14**
6 10 -5 -3 8 10
15
27 32 17 18 15 17
16
29 35 20 21 18 20
17
31 36 20 21 24 25
Los inventores consideran que existe un buen compromiso entre la relación S, la potencia máxima desarrollada por la muela en el ensayo de mecanizado, Pmáx, y la vida útil de la muela tmáx cuando:
5 -la relación S mejora al menos un 10 % con relación a los productos de los ejemplos de referencia, y
-la potencia máxima desarrollada, Pmáx, se reduce al menos un 5 % con relación a los productos de los ejemplos de referencia, y
10 -la vida útil de la muela, tmáx, mejora al menos un 6 % con relación a los productos de los ejemplos de referencia.
De preferencia, la relación S mejora al menos un 15 %, de preferencia al menos un 20 %, de preferencia al menos un 25 %, hasta al menos un 30 % y/o la potencia máxima desarrollada, Pmáx, se reduce al menos un 10 %, de preferencia al menos un 15 %, hasta al menos un 20 % y/o la vida útil de la muela, tmáx, mejora al menos un 10 %,
15 de preferencia al menos un 15 % hasta al menos un 20 %.
El ejemplo 10 muestra que un contenido de circonia cuadrática del 91 % de la masa de circonia no permite respetar el compromiso buscado.
20 Los ejemplos 12 y 14 muestran que un contenido de circonia cuadrática de 57 y 55 % de la masa de circonia, respectivamente, no es suficiente para respetar el compromiso buscado.
El ejemplo 11 muestra que un contenido de circonia cuadrática de 64 % de la masa de circonia permite respetar dicho compromiso.
25 El ejemplo 9 muestra que un contenido de sílice del 0,06 % es demasiado alto y no permite respetar dicho compromiso. El ejemplo 10 muestra que un contenido de sílice inferior al 0,20 % no permite respetar dicho compromiso.
30 El ejemplo 13 muestra que, a pesar de los contenidos de circonia cuadrática y sílice adaptados, no se respeta el compromiso si el contenido de óxido de itrio es inferior al 0,45 % y si el contenido de TiO2 es superior al 2 %.
Los ejemplos 10, 12 y 14 muestran que una relación Y2O3/SiO2 inferior a 0,80 y superior a 2,00 no permite el respeto del compromiso.
7
imagen5

Claims (1)

  1. imagen1
ES10747292.0T 2009-08-05 2010-08-04 Granos de alúmina-circonia fundidos Active ES2526221T3 (es)

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FR0955513A FR2948934B1 (fr) 2009-08-05 2009-08-05 Grains d'alumine-zircone fondus.
FR0955513 2009-08-05
PCT/IB2010/053528 WO2011015995A2 (fr) 2009-08-05 2010-08-04 Grains d'alumine-zircone fondus

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PT2569385E (pt) 2010-05-10 2015-03-23 Ct For Abrasives & Refractories Res & Dev Carrd Gm Grãos abrasivos à base de corindo de zircónio
US8974561B2 (en) * 2011-09-30 2015-03-10 Hoya Corporation Manufacturing method of glass substrate for magnetic disk, magnetic disk, and magnetic recording / reproducing device
DE102013106372B4 (de) 2013-06-19 2018-08-23 Center For Abrasives And Refractories Research & Development C.A.R.R.D. Gmbh Schleifkörner auf Basis von eutektischem Zirkonkorund
RU2016121145A (ru) * 2013-11-01 2017-12-06 Баладжи Индастриал Продактс Лтд. Износостойкий состав для изготовления износостойкого элемента, применяемого для изготовления измельчающего валка или футеровки размольного стола вертикальной валковой мельницы, и способы их изготовления
FR3047733B1 (fr) * 2016-02-12 2018-03-02 Saint-Gobain Centre De Recherches Et D'etudes Europeen Grains d'alumine-zircone fondus
CN108251056A (zh) 2016-12-29 2018-07-06 圣戈本陶瓷及塑料股份有限公司 研磨颗粒、固定研磨制品以及形成该固定研磨制品的方法
DE102017207322A1 (de) * 2017-05-02 2018-11-08 Robert Bosch Gmbh Geformtes keramisches Schleifkorn sowie Verfahren zur Herstellung eines geformten keramischen Schleifkorns
DE102020116845B4 (de) 2020-06-25 2024-02-22 Imertech Sas Zirkonkorund-Schleifkörner mit hohem SiO2-Anteil und Verfahren zu deren Herstellung

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PT2462081E (pt) 2014-12-23
FR2948934A1 (fr) 2011-02-11
CA2769867A1 (fr) 2011-02-10
FR2948934B1 (fr) 2011-07-29
BR112012002586B1 (pt) 2020-09-15
EP2462081B1 (fr) 2014-10-08
CN102471161B (zh) 2013-11-13
EP2462081A2 (fr) 2012-06-13
HRP20141225T1 (hr) 2015-02-27
KR101717770B1 (ko) 2017-03-17
WO2011015995A3 (fr) 2011-04-21
CN102471161A (zh) 2012-05-23
CY1116033T1 (el) 2017-01-25
RU2543846C2 (ru) 2015-03-10
RU2012103259A (ru) 2013-09-10
BR112012002586A2 (pt) 2016-03-22
US20120186161A1 (en) 2012-07-26
AU2010280429A1 (en) 2012-02-23
CA2769867C (fr) 2017-06-13
US9212097B2 (en) 2015-12-15
WO2011015995A2 (fr) 2011-02-10
PL2462081T3 (pl) 2015-04-30
SI2462081T1 (sl) 2015-03-31
DK2462081T3 (en) 2015-01-05
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