Scientific terms with B
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Backscattering: The scattering of particles or waves back in the direction from which they came.
Band
gap: The energy range in a solid material in which no electrons are able to
occupy energy states.
Band
structure: The distribution of electronic energy levels within a solid
material, as determined by its crystal structure.
Bandgap:
The energy gap between the valence band and the conduction band in a solid
material.
Barium
titanate: A ceramic material with the chemical formula BaTiO3, used as a
dielectric in capacitors.
Barrier
layer: A layer of material that is used to prevent the diffusion of atoms
or molecules from one material to another.
Base
material: The material upon which a coating or other layer is applied.
Beam:
A structural element that is designed to resist bending and shear forces.
B-H
curve: A graph showing the relationship between the magnetic field strength
(B) and the magnetic field intensity (H) in a material.
Biodegradable:
A material that can be broken down into natural products by living organisms.
Biomaterial:
A material that is used in medical devices or implants, either as a replacement
for a missing part of the body or to assist in the repair of a damaged or
diseased tissue.
Birefringence:
The property of a material to have different refractive indices for light
polarized in different directions.
Birefringence:
The property of a material to have two different refractive indices for light
traveling in different directions through the material.
Bond
strength: The measure of the strength of the bond between atoms or
molecules in a material.
Bond:
The attractive force between atoms or molecules that holds them together.
Bonding
energy: The energy required to break the bond between atoms or molecules in
a material.
Bonding
mechanism: The process by which atoms or molecules form a bond.
Boron
carbide: A hard, abrasive material with the chemical formula B4C, used as
an abrasive and a neutron absorber.
Boron:
A chemical element with the atomic number 5 and the symbol B. It is a hard,
brittle metalloid that is used as a dopant in semiconductor materials.
Bouncing:
The process of a material rebounding or bouncing back after being subjected to
a force.
Boundary
layer: A thin layer of material that is adjacent to a surface and is
subjected to different conditions than the material further away from the
surface.
Brazing:
A metal joining process in which two or more metal parts are joined together by
melting and flowing a filler metal into the joint.
Breakaway:
The point at which a material fails or breaks under a load.
Breakdown:
The point at which a material fails or breaks down under a load.
Breaking
strength: The maximum stress that a material can withstand before breaking.
Brittle:
A term used to describe materials that are prone to breaking or cracking under
stress rather than deforming.
Brittleness:
The property of a material to break or shatter rather than deforming when
subjected to a load.
Bronzing:
A process in which a thin layer of bronze is applied to a surface.
Brookite:
A form of titanium dioxide that has a monoclinic crystal structure.
Brownian
motion: The random motion of particles suspended in a fluid, caused by the
random motion of the fluid molecules.
Bruising:
The process of deforming a material by applying a load that exceeds its yield
strength.
B-stage
resin: A type of thermosetting resin that has been partially cured and is
in a semi-solid state.
Buckle:
A type of deformation that occurs when a material is subjected to a compressive
load.
Buckling:
A type of structural failure that occurs when a compressive load causes a
column or other structural member to deform laterally.
Buffer
layer: A thin layer of material that is used to separate two other
materials in order to reduce their interaction.
Bulk
density: The mass of a material per unit volume.
Bulk
hardening: A type of strengthening mechanism in which a material is made
stronger by increasing the size of its crystals or grains.
Bulk
modulus of elasticity: A measure of the stiffness of a material. It is the
ratio of the applied pressure to the fractional change in volume of the material.
Bulk
modulus: A measure of the compressibility of a material. It is the ratio of
the pressure applied to the fractional decrease in volume of a material.
Bulk
modulus: The ratio of a material's volume change to the applied pressure
that caused the change.
Bulk
viscosity: The resistance of a fluid to flow under an applied stress.
Buried
interface: An interface between two materials that is not exposed to the
surface.
Burnishing:
A process in which a surface is polished or smoothed by rubbing it with a hard,
smooth tool.
Burns:
A term used to describe the process of oxidizing a material by heating it in
the presence of oxygen.
Bursting
strength: The maximum load that a material can withstand before it ruptures
or bursts
Burying:
The process of coating a surface with a layer of another material in order to
protect it from the environment or to improve its performance.
Butt
weld: A type of weld that is made by joining two metal parts together at
their edges.
B-value:
A measure of the elastic stiffness of a material, equal to the slope of the
stress-strain curve in the linear elastic region.
Bypass:
A type of material that allows electrons or other charge carriers to flow
around a region of a material rather than through it.
Bytellurgy:
The study of the behavior of materials under high pressure.
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