Claims
- 1. A sintered material for recording/reading head slider consisting essentially of:
- 0.5 to 6.0% by weight of at least one component selected from the component group A consisting of the following elements and compounds thereof,
- 5 to 15% by weight of erbium oxide, and
- the balance being silicon carbide:
- the elements for the component group A being Ti, V, Cr, Mn, Mg, Y, Zr, Nb, Mo, Ba, La, Ce, Gd, Hf, Ta, W, Th, and Cs.
- 2. A sintered material for recording/reading head slider consisting essentially of:
- 0.5 to 6.0% by weight of at least one component selected from the component group A consisting of the following elements and compounds thereof,
- 5 to 15% by weight of erbium oxide,
- a further sintering aid consisting of at least one of Be, BeO, B, B.sub.4 C, Al, AlN and Al.sub.2 O.sub.3 in an amount of 0 (exclusive) to 2 (inclusive) % by weight based on the total composition, and
- the balance being silicon carbide:
- the elements for the component group A being Ti, V, Cr, Mn, Mg, Y, Zr, Nb, Mo, Ba, La, Ce, Gd, Hf, Ta, W, Th, and Cs.
- 3. A sintered material for recording/reading head slider consisting essentially of:
- 0.5 to 6.0% by weight of at least one component selected from the component group A consisting of the following elements and compounds thereof,
- 2 to 12% by weight of erbium oxide,
- 0 (exclusive) to 2 (inclusive) % by weight of aluminum oxide, and
- the balance being silicon carbide,
- wherein said erbium oxide and aluminum oxide are present as a compound of garnet crystal structure expressed by the formula Er.sub.3 (Al,Er).sub.2 (AlO.sub.4).sub.3 through (Er,Al).sub.3 Al.sub.2 (AlO.sub.4).sub.3 :
- the elements for the component group A being Ti, V, Cr, Mn, Mg, Y, Zr, Nb, Mo, Ba, La, Ce, Gd, Hf, Ta, W, Th, and Cs.
- 4. A sintered material for recording/reading head slider consisting essentially of:
- 0.5 to 6.0% by weight of at least one component selected from the component group A consisting of the following elements and compounds thereof,
- 2 to 12% by weight of erbium oxide,
- 0 (exclusive) to 2 (inclusive) % by weight of aluminum oxide,
- a further sintering aid consisting of at least one of Be, BeO, B and B.sub.4 C in an amount of 0 (exclusive) to 2 (inclusive) % by weight, and
- the balance being silicon carbide,
- wherein erbium oxide and aluminum oxide are present as a compound of garnet crystal structure expressed by the formula Er.sub.3 (Al,Er).sub.2 (AlO.sub.4).sub.3 through (Er,Al).sub.3 Al.sub.2 (AlO.sub.4).sub.3 :
- the elements for the component group A being Ti, V, Cr, Mn, Mg, Y, Zr, Nb, Mo, Ba, La, Ce, Gd, Hf, Ta, W, Th, and Cs.
- 5. A sintered material as defined in any of claim 1, 2, 3 or 4, wherein said compounds for the component group A are oxide, carbide, boride, nitride and a complex compound thereof.
- 6. A sintered material as defined in claim 5, wherein said component of the components group A is at least one selected from the group consisting of TiC, TiO.sub.2, TiN, VB.sub.2, VN, V.sub.2 O.sub.5, Cr.sub.3 C.sub.2, CrB, Cr.sub.2 O.sub.3, MnO, Mn, Mg, MgO, Y, Y.sub.2 O.sub.3, ZrC, ZrB.sub.2, ZrO.sub.2, NbC, NbB, NbN, Nb.sub.2 O.sub.3, Mo.sub.2 C, MoB, Mo, Ba, BaO, La.sub.2 O.sub.3, La, CeB.sub.6, Ce.sub.2 O, Gd.sub.2 O.sub.3, HfC, HfB.sub.2, HfN, HfO.sub.2, TaC, TaB, TaN, Ta.sub.2 O.sub.5, WC, WB, W, ThC, ThB.sub.4, ThN, and Cs.
- 7. A sintered material as defined in claim 3 or 4, wherein the compound of garnet crystal structure amounts to 4-10% by weight.
- 8. A sintered material as defined in claim 1 or 2, which includes substantially no pore having a diameter exceeding 2 microns.
- 9. A sintered material as defined in claim 3 or 4, which includes substantially no pore having a diameter exceeding one micron.
- 10. A sintered material as defined in claim 9, which includes substantially no pore having a diameter exceeding 0.5 micron.
- 11. A recording/reading head slider comprising a slider substrate member formed of the sintered material as defined in any of claim 1, 2, 3 or 4.
- 12. A recording/reading head slider compising a slider substrate member produced by the process as defined in any of claim 3, 4, 7 or 8.
Priority Claims (1)
Number |
Date |
Country |
Kind |
59-83674 |
Apr 1984 |
JPX |
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Parent Case Info
This application is a continuation of application Ser. No. 727,756, filed Apr. 26, 1985, which is now abandoned.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
4564490 |
Omori et al. |
Jan 1986 |
|
4569921 |
Omori et al. |
Feb 1986 |
|
Continuations (1)
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Number |
Date |
Country |
Parent |
727756 |
Apr 1985 |
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