Various shaped abrasive particles are disclosed. Each shaped abrasive particle includes a body having at least one major surface and a side surface extending from the major surface. The side surface can includes a toothed portion. The toothed portion can comprise a plurality of teeth. Each one of the teeth can have the same height.

Various shaped abrasive particles are disclosed. Each shaped abrasive particle includes a body having at least one major surface and a side surface extending from the major surface. The side surface can includes a toothed portion. The toothed portion can comprise a plurality of teeth. Each one of the teeth can have the same height.

Various embodiments disclosed relate to an abrasive article. The abrasive article includes a first major surface and an opposed second major surface. Each major surface contacts a peripheral side surface. A central axis extends through the first and second major surfaces. A first layer of abrasive particles is dispersed within the abrasive article according to a first predetermined pattern. Further a second layer of abrasive particles spaced apart from the first layer of abrasive particles and is dispersed within the abrasive article along a according to a second predetermined pattern. A binder material retains the first and second layers of abrasive particles in the abrasive article. A portion of the binder material is located between the first and second layers of abrasive particles. That portion of the binder material is substantially continuous.

Various embodiments disclosed relate to an abrasive article. The abrasive article includes a first major surface and an opposed second major surface. Each major surface contacts a peripheral side surface. A central axis extends through the first and second major surfaces. A first layer of abrasive particles is dispersed within the abrasive article according to a first predetermined pattern. Further a second layer of abrasive particles spaced apart from the first layer of abrasive particles and is dispersed within the abrasive article along a according to a second predetermined pattern. A binder material retains the first and second layers of abrasive particles in the abrasive article. A portion of the binder material is located between the first and second layers of abrasive particles. That portion of the binder material is substantially continuous.

A system includes a distribution tool, a backing, a first plurality of abrasive particles and a second plurality of abrasive articles. The distribution tool includes a first section and a second section. The first section is configured to receive the first plurality of abrasive particles and pass the first plurality of abrasive particles through one or more of the plurality of slots to the backing. The second plurality of abrasive particles differ in at least one of a size, an average weight and a shape from the first plurality of abrasive particles. The second section is configured to receive the second plurality of abrasive particles and pass the second plurality of abrasive particles through one or more of the plurality of slots to the backing.

A system includes a distribution tool, a backing, a first plurality of abrasive particles and a second plurality of abrasive articles. The distribution tool includes a first section and a second section. The first section is configured to receive the first plurality of abrasive particles and pass the first plurality of abrasive particles through one or more of the plurality of slots to the backing. The second plurality of abrasive particles differ in at least one of a size, an average weight and a shape from the first plurality of abrasive particles. The second section is configured to receive the second plurality of abrasive particles and pass the second plurality of abrasive particles through one or more of the plurality of slots to the backing.

In a high-porosity CBN vitrified grinding stone having a homogeneous structure, a CBN abrasive grain, a large-diameter inorganic hollow filler having an average particle diameter in a range from a grain size one class coarser to a grain size one class finer with respect to a class indicating a grain size of the CBN abrasive grain, and a small-diameter inorganic hollow filler having an average particle diameter of ⅕ to ½ of that of the CBN abrasive grain are bonded by an inorganic bonding agent.

In a high-porosity CBN vitrified grinding stone having a homogeneous structure, a CBN abrasive grain, a large-diameter inorganic hollow filler having an average particle diameter in a range from a grain size one class coarser to a grain size one class finer with respect to a class indicating a grain size of the CBN abrasive grain, and a small-diameter inorganic hollow filler having an average particle diameter of ⅕ to ½ of that of the CBN abrasive grain are bonded by an inorganic bonding agent.

A synthetic grindstone (100) for chemo-mechanical grinding a wafer S, comprising: an abrasive (101) that contains cerium oxide having an average particle diameter of 10 μm or less as a main component and has a chemo-mechanical grinding action on the wafer S; a friction promoter (102) that contains a fiber material having a Mohs hardness lower than that of the wafer S and a high friction coefficient as a main component and promotes heat generation; and a binder (103) that contains a phenol resin as a main component and disperses and binds the abrasive (101) and the friction promotor (102).

A fixed abrasive article having a body including abrasive particles contained within a bond material, the abrasive particles including shaped abrasive particles or elongated abrasive particles having an aspect ratio of length:width of at least 1.1:1, each of the shaped abrasive particles or elongated abrasive particles having a predetermined position or a predetermined three-axis orientation, including a placement angle ranging from +90 degrees to −90 degrees and a rake angle ranging from +90 degrees to −90 degrees.