Light weight material containing al-cbn and aluminum
AssigneeKing Fahd University of Petroleum and Minerals
InventorsAbbas Saeed HAKEEM, Muhammad Ali EHSAN, Hafiz Muzammil IRSHAD, Bilal Anjum AHMED
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Abstract
A method of making an aluminum-cubic boron nitride (Al-cBN) composite includes mixing an aluminum powder and particles of cubic boron nitride (cBN) in a solvent and sonicating to form an Al-cBN mixture; drying the Al-cBN mixture to form a dried mixture powder; and sintering by pressing and heating the dried mixture powder to form the Al-cBN composite. The aluminum powder has an average particle size of 10 to 100 micrometers (μm). The cBN particles have an average particle size of from 10 to 100 μm, and are uniformly dispersed throughout the Al-cBN composite.
Claims20
(canceled)
The light weight material of claim 14, wherein the aluminum powder has an average particle size of about 50 μm.
The light weight material of claim 14, wherein the cBN particles have a cubic or octahedral shape.
The light weight material of claim 14, having a network matrix of aluminum;
- wherein the cBN particles are uniformly dispersed throughout the network matrix of aluminum.
The light weight material of claim 14, wherein the solvent for preparing the Al-cBN composite is at least one alcohol selected from the group consisting of methanol, ethanol and propanol.
The light weight material of claim 14, wherein a weight ratio of the aluminum powder to the cBN particles is in a range of from 100:1 to 5:1.
The light weight material of claim 14, wherein the pressing for preparing the Al-cBN composite is performed under a uniaxial pressure in a range of 30 to 70 megaPascals (MPa).
The light weight material of claim 14, wherein the heating for preparing the Al-cBN composite is performed at a temperature in a range of 500 to 600° C.
The light weight material of claim 14, wherein during the sintering for preparing the Al-cBN composite, the aluminum powder and the cBN particles in the dried mixture do not react.
The light weight material of claim 14, wherein the Al-cBN composite has an average hardness in a range of 1 to 2 gigaPascals (GPa).
The light weight material of claim 14, wherein the Al-cBN composite has an average elastic modulus in a range of 70 to 80 GPa.
The light weight material of claim 14, wherein the Al-cBN composite has a density in a range of 2.5 to 2.7 grams per cubic centimeter (g/cm3).
The light weight material of claim 14, wherein the Al-cBN composite has a densification in a range of 94 to 99% based on a density of the aluminum powder.
A light weight material comprising an Al-cBN composite prepared by:
- mixing an aluminum powder and particles of cubic boron nitride (cBN) in a solvent and sonicating to form an Al-cBN mixture;
- drying the Al-cBN mixture to form a dried mixture powder;
- sintering by pressing and heating the dried mixture powder to form the Al-cBN composite;
- wherein the aluminum powder has an average particle size of 10 to 100 micrometers (μm);
- wherein the cBN particles have an average particle size of from 10 to 100 μm;
- and
- wherein the cBN particles are uniformly dispersed throughout the Al-cBN composite;
- wherein a weight ratio of the aluminum powder to the cBN particles is about 9:1, and wherein the cBN particles have an average particle size of from 20 to 60 μm.
Dependencies are inferred from the claim text.