A method to manufacture a sintered cemented carbide body having a binder phase-depletion zone extending from a working surface inward to a depth, the method comprising: sintering a cemented carbide body , the sintered cemented carbide body including inner surfaces defining a bore extending through the sintered cemented carbide body from a top surface to a bottom surface , wherein the bore includes a working surface , and wherein the sintered cemented carbide body has a composition including (i) at least one of WC and W2C, (ii) a hard phase of a metal carbide, metal carbonitride or metal oxycarbonitride, and (iii) a binder phase; and treating at least a portion of the working surface with a boron yielding method, the boron yielding method including the steps of (a) applying a composition including boron or a boron containing material, a solvent, and a surfactant and (b) heating to a temperature in a range of 1200 °C to 1450 °C, preferably at 1400 °C to 1420 °C, under a pressure less than atmospheric pressure or in a hydrogen containing atmosphere, wherein the boron yielding method results in a binder phase-depletion zone extending from the at least a portion of the working surface treated with the boron yielding method inward to a depth, wherein an amount of binder phase in the binder phase-depletion zone is less than 2.5 wt.%, and wherein the binder phase-depletion zone has a microstructure that includes an eta-phase with a grain size less than 6.0 μm, as measured by Standard EN ISO 4499-2:2008; wherein the composition applied in the boron yielding method includes aluminum or an aluminum containing material; and wherein an amount of aluminum in the composition applied in the boron yielding method is 10 wt.% to 20 wt.%. sintering a cemented carbide body , the sintered cemented carbide body including inner surfaces defining a bore extending through the sintered cemented carbide body from a top surface to a bottom surface , wherein the bore includes a working surface , and wherein the sintered cemented carbide body has a composition including (i) at least one of WC and W2C, (ii) a hard phase of a metal carbide, metal carbonitride or metal oxycarbonitride, and (iii) a binder phase; and treating at least a portion of the working surface with a boron yielding method, the boron yielding method including the steps of (a) applying a composition including boron or a boron containing material, a solvent, and a surfactant and (b) heating to a temperature in a range of 1200 °C to 1450 °C, preferably at 1400 °C to 1420 °C, under a pressure less than atmospheric pressure or in a hydrogen containing atmosphere, wherein the boron yielding method results in a binder phase-depletion zone extending from the at least a portion of the working surface treated with the boron yielding method inward to a depth, wherein an amount of binder phase in the binder phase-depletion zone is less than 2.5 wt.%, and wherein the binder phase-depletion zone has a microstructure that includes an eta-phase with a grain size less than 6.0 μm, as measured by Standard EN ISO 4499-2:2008; wherein the composition applied in the boron yielding method includes aluminum or an aluminum containing material; and wherein an amount of aluminum in the composition applied in the boron yielding method is 10 wt.% to 20 wt.%. <EOS>