Abrasive particles having complex shapes and methods of forming same
US-2017145274-A1 · May 25, 2017 · US
Laser method for making shaped ceramic abrasive particles, shaped ceramic abrasive particles, and abrasive articles
US9657207B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9657207-B2 |
| Application number | US-201514730919-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 4, 2015 |
| Priority date | Nov 1, 2010 |
| Publication date | May 23, 2017 |
| Grant date | May 23, 2017 |
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- Title
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Abstract
Official abstract text for this publication.
A method of making shaped ceramic abrasive particles includes cutting a layer of ceramic precursor material using a laser beam and forming shaped ceramic precursor particles. Further thermal processing provides shaped ceramic abrasive particles. Shaped ceramic abrasive particles producible by the methods and abrasive articles containing them are also disclosed.
First claim
Opening claim text (preview).
What is claimed is: 1. Shaped ceramic precursor particles, wherein each of the shaped ceramic precursor particles has first and second opposed nonadjacent major surfaces, a peripheral surface extending between the first and second major surfaces, wherein the peripheral surface comprises an ablated region extending along the peripheral surface adjacent to the first major surface but not contacting the second major surface, and a fractured region extending along the peripheral surface adjacent the second major surface but not contacting the first major surface. 2. The shaped ceramic precursor particles of claim 1 , wherein the fractured region has an area greater than that of the ablated region. 3. The shaped ceramic precursor particles of claim 1 , wherein the shaped ceramic precursor particles comprise an alpha alumina precursor. 4. Shaped ceramic abrasive particles, wherein each of the shaped ceramic abrasive particles has first and second opposed nonadjacent major surfaces, a peripheral surface extending between the first and second major surfaces, wherein the peripheral surface comprises an ablated region extending along the peripheral surface adjacent to the first major surface but not contacting the second major surface, and a fractured region extending along the peripheral surface adjacent the second major surface but not contacting the first major surface. 5. The shaped ceramic abrasive particles of claim 4 , wherein the fractured region has an area greater than that of the ablated region. 6. The shaped ceramic abrasive particles of claim 4 , wherein the shaped ceramic abrasive particles comprise alpha alumina. 7. The shaped ceramic abrasive particles of claim 4 , wherein the shaped ceramic abrasive particles have a size distribution corresponding to an abrasives industry recognized nominal grade. 8. A bonded abrasive article comprising the shaped ceramic abrasive particles of claim 4 retained in a binder.
Assignees
Inventors
Classifications
Products characterised by their shape · CPC title
- C09K3/1418Primary
obtained by division of a mass agglomerated by sintering · CPC title
by boring or cutting · CPC title
Tape casting, e.g. with a doctor blade · CPC title
the constituent being used as bonding agent · CPC title
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Frequently asked questions
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- What does patent US9657207B2 cover?
- A method of making shaped ceramic abrasive particles includes cutting a layer of ceramic precursor material using a laser beam and forming shaped ceramic precursor particles. Further thermal processing provides shaped ceramic abrasive particles. Shaped ceramic abrasive particles producible by the methods and abrasive articles containing them are also disclosed.
- Who is the assignee on this patent?
- 3M Innovative Properties Co
- What technology area does this patent fall under?
- Primary CPC classification C09K3/1418. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue May 23 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).